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191485441 = 728396661
BaseRepresentation
bin10110110100111…
…01011000000001
3111100022110122101
423122131120001
5343010013231
631000110401
74513412410
oct1332353001
9440273571
10191485441
11990a7934
1254165401
13308958c4
141b607477
1511c26661
hexb69d601

191485441 has 8 divisors (see below), whose sum is σ = 219616064. Its totient is φ = 163548720.

The previous prime is 191485361. The next prime is 191485453. The reversal of 191485441 is 144584191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191485441 - 27 = 191485313 is a prime.

It is a super-2 number, since 2×1914854412 = 73333348229928962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 191485441.

It is not an unprimeable number, because it can be changed into a prime (191485141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46350 + ... + 50311.

It is an arithmetic number, because the mean of its divisors is an integer number (27452008).

Almost surely, 2191485441 is an apocalyptic number.

It is an amenable number.

191485441 is a deficient number, since it is larger than the sum of its proper divisors (28130623).

191485441 is an equidigital number, since it uses as much as digits as its factorization.

191485441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96951.

The product of its digits is 23040, while the sum is 37.

The square root of 191485441 is about 13837.8264550470. The cubic root of 191485441 is about 576.3840042015.

The spelling of 191485441 in words is "one hundred ninety-one million, four hundred eighty-five thousand, four hundred forty-one".

Divisors: 1 7 283 1981 96661 676627 27355063 191485441