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1901532089 = 5993174511
BaseRepresentation
bin111000101010111…
…0001001110111001
311220112001211122102
41301111301032321
512343243011324
6512404233145
765056520222
oct16125611671
94815054572
101901532089
11896402226
1245099b7b5
13243c4c022
14140786249
15b1e11dae
hex715713b9

1901532089 has 4 divisors (see below), whose sum is σ = 1904707200. Its totient is φ = 1898356980.

The previous prime is 1901532079. The next prime is 1901532097. The reversal of 1901532089 is 9802351091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9802351091 = 13754027007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1901532089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901532019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1586657 + ... + 1587854.

It is an arithmetic number, because the mean of its divisors is an integer number (476176800).

Almost surely, 21901532089 is an apocalyptic number.

It is an amenable number.

1901532089 is a deficient number, since it is larger than the sum of its proper divisors (3175111).

1901532089 is an equidigital number, since it uses as much as digits as its factorization.

1901532089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175110.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1901532089 is about 43606.5601601410. The cubic root of 1901532089 is about 1238.8951503146.

The spelling of 1901532089 in words is "one billion, nine hundred one million, five hundred thirty-two thousand, eighty-nine".

Divisors: 1 599 3174511 1901532089