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190986001 = 355753693
BaseRepresentation
bin10110110001000…
…11011100010001
3111022101002112121
423120203130101
5342343023001
630541254241
74506232333
oct1330433421
9438332477
10190986001
1198896678
1253b64381
133074c48b
141b517453
1511b786a1
hexb623711

190986001 has 4 divisors (see below), whose sum is σ = 191043252. Its totient is φ = 190928752.

The previous prime is 190985987. The next prime is 190986023. The reversal of 190986001 is 100689091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30305025 + 160680976 = 5505^2 + 12676^2 .

It is a cyclic number.

It is not a de Polignac number, because 190986001 - 25 = 190985969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190986101) 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 3 ways as a sum of consecutive naturals, for example, 23290 + ... + 30403.

It is an arithmetic number, because the mean of its divisors is an integer number (47760813).

It is a 3336-hyperperfect number.

Almost surely, 2190986001 is an apocalyptic number.

It is an amenable number.

190986001 is a deficient number, since it is larger than the sum of its proper divisors (57251).

190986001 is an equidigital number, since it uses as much as digits as its factorization.

190986001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57250.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 190986001 is about 13819.7684857598. The cubic root of 190986001 is about 575.8824519404.

The spelling of 190986001 in words is "one hundred ninety million, nine hundred eighty-six thousand, one".

Divisors: 1 3557 53693 190986001