1055683390 has 32 divisors (see below), whose sum is σ = 1916325216. Its totient is φ = 418713600.

The previous prime is 1055683381. The next prime is 1055683439. The reversal of 1055683390 is 933865501.

It is a super-2 number, since 2×1055683390² = 2228934839843784200, 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, 658590 + ... + 660190.

It is an arithmetic number, because the mean of its divisors is an integer number (59885163).

Almost surely, 2^1055683390 is an apocalyptic number.

1055683390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055683390 is a deficient number, since it is larger than the sum of its proper divisors (860641826).

1055683390 is a wasteful number, since it uses less digits than its factorization.

1055683390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1055683390 is about 32491.2817537259. The cubic root of 1055683390 is about 1018.2268919657.

The spelling of 1055683390 in words is "one billion, fifty-five million, six hundred eighty-three thousand, three hundred ninety".