1055917830 has 32 divisors (see below), whose sum is σ = 2764585728. Its totient is φ = 255980000.

The previous prime is 1055917823. The next prime is 1055917843. The reversal of 1055917830 is 387195501.

It is a super-2 number, since 2×1055917830² = 2229924927423817800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1599546 + ... + 1600205.

It is an arithmetic number, because the mean of its divisors is an integer number (86393304).

Almost surely, 2^1055917830 is an apocalyptic number.

1055917830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055917830 is an abundant number, since it is smaller than the sum of its proper divisors (1708667898).

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

1055917830 is a wasteful number, since it uses less digits than its factorization.

1055917830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199772.

The product of its (nonzero) digits is 37800, while the sum is 39.

The square root of 1055917830 is about 32494.8892904715. The cubic root of 1055917830 is about 1018.3022603468.

The spelling of 1055917830 in words is "one billion, fifty-five million, nine hundred seventeen thousand, eight hundred thirty".