1855077213 has 64 divisors (see below), whose sum is σ = 3010867200. Its totient is φ = 1002101760.

The previous prime is 1855077199. The next prime is 1855077223. The reversal of 1855077213 is 3127705581.

It is not a de Polignac number, because 1855077213 - 2⁴ = 1855077197 is a prime.

It is a super-2 number, since 2×1855077213² = 6882622932383694738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855077223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1405768 + ... + 1407086.

It is an arithmetic number, because the mean of its divisors is an integer number (47044800).

Almost surely, 2^1855077213 is an apocalyptic number.

It is an amenable number.

1855077213 is a deficient number, since it is larger than the sum of its proper divisors (1155789987).

1855077213 is a wasteful number, since it uses less digits than its factorization.

1855077213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 1855077213 is about 43070.6072977849. The cubic root of 1855077213 is about 1228.7230259627.

The spelling of 1855077213 in words is "one billion, eight hundred fifty-five million, seventy-seven thousand, two hundred thirteen".