1855917228936 has 32 divisors (see below), whose sum is σ = 4841523207360. Its totient is φ = 591741724992.

The previous prime is 1855917228911. The next prime is 1855917228941. The reversal of 1855917228936 is 6398227195581.

It is a super-2 number, since 2×1855917228936² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681083895 + ... + 1681084998.

It is an arithmetic number, because the mean of its divisors is an integer number (151297600230).

Almost surely, 2^{1855917228936} is an apocalyptic number.

It is an amenable number.

1855917228936 is an abundant number, since it is smaller than the sum of its proper divisors (2985605978424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1855917228936 is a wasteful number, since it uses less digits than its factorization.

1855917228936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362168925 (or 3362168921 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 66.

The spelling of 1855917228936 in words is "one trillion, eight hundred fifty-five billion, nine hundred seventeen million, two hundred twenty-eight thousand, nine hundred thirty-six".