1651157065 has 16 divisors (see below), whose sum is σ = 2002686336. Its totient is φ = 1306800000.

The previous prime is 1651157033. The next prime is 1651157069. The reversal of 1651157065 is 5607511561.

It is not a de Polignac number, because 1651157065 - 2⁵ = 1651157033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1651157069) 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 15 ways as a sum of consecutive naturals, for example, 185149 + ... + 193861.

It is an arithmetic number, because the mean of its divisors is an integer number (125167896).

Almost surely, 2^1651157065 is an apocalyptic number.

It is an amenable number.

1651157065 is a deficient number, since it is larger than the sum of its proper divisors (351529271).

1651157065 is a wasteful number, since it uses less digits than its factorization.

1651157065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120.

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 1651157065 is about 40634.4320127647. The cubic root of 1651157065 is about 1181.9419008932.

The spelling of 1651157065 in words is "one billion, six hundred fifty-one million, one hundred fifty-seven thousand, sixty-five".