1880055990 has 48 divisors (see below), whose sum is σ = 4968293616. Its totient is φ = 493128000.

The previous prime is 1880055973. The next prime is 1880056021. The reversal of 1880055990 is 995500881.

1880055990 is a `hidden beast` number, since 1 + 8 + 8 + 0 + 0 + 559 + 90 = 666.

It is a super-2 number, since 2×1880055990² = 7069221051069760200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165736 + ... + 176715.

It is an arithmetic number, because the mean of its divisors is an integer number (103506117).

Almost surely, 2^1880055990 is an apocalyptic number.

1880055990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1880055990 is an abundant number, since it is smaller than the sum of its proper divisors (3088237626).

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

1880055990 is a wasteful number, since it uses less digits than its factorization.

1880055990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342525 (or 342522 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 1880055990 is about 43359.6124290797. The cubic root of 1880055990 is about 1234.2134107250.

The spelling of 1880055990 in words is "one billion, eight hundred eighty million, fifty-five thousand, nine hundred ninety".