1864796057 has 4 divisors (see below), whose sum is σ = 1864932900. Its totient is φ = 1864659216.

The previous prime is 1864796051. The next prime is 1864796081. The reversal of 1864796057 is 7506974681.

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 1169366416 + 695429641 = 34196^2 + 26371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864796057 - 2²⁰ = 1863747481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864796051) 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, 45398 + ... + 76095.

It is an arithmetic number, because the mean of its divisors is an integer number (466233225).

Almost surely, 2^1864796057 is an apocalyptic number.

It is an amenable number.

1864796057 is a deficient number, since it is larger than the sum of its proper divisors (136843).

1864796057 is a wasteful number, since it uses less digits than its factorization.

1864796057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136842.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 1864796057 is about 43183.2844628567. The cubic root of 1864796057 is about 1230.8650703843.

The spelling of 1864796057 in words is "one billion, eight hundred sixty-four million, seven hundred ninety-six thousand, fifty-seven".