1857800000427 has 12 divisors (see below), whose sum is σ = 2881485715176. Its totient is φ = 1061600000160.

The previous prime is 1857800000389. The next prime is 1857800000447. The reversal of 1857800000427 is 7240000087581.

It is not a de Polignac number, because 1857800000427 - 2¹⁶ = 1857799934891 is a prime.

It is a super-2 number, since 2×1857800000427² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1857800000447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6319047474 + ... + 6319047767.

It is an arithmetic number, because the mean of its divisors is an integer number (240123809598).

Almost surely, 2^{1857800000427} is an apocalyptic number.

1857800000427 is a deficient number, since it is larger than the sum of its proper divisors (1023685714749).

1857800000427 is a wasteful number, since it uses less digits than its factorization.

1857800000427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12638095258 (or 12638095251 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The spelling of 1857800000427 in words is "one trillion, eight hundred fifty-seven billion, eight hundred million, four hundred twenty-seven", and thus it is an aban number.