1011993255 has 96 divisors (see below), whose sum is σ = 2286071424. Its totient is φ = 401891328.

The previous prime is 1011993173. The next prime is 1011993271. The reversal of 1011993255 is 5523991101.

It is not a de Polignac number, because 1011993255 - 2⁷ = 1011993127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 62347 + ... + 76883.

It is an arithmetic number, because the mean of its divisors is an integer number (23813244).

Almost surely, 2^1011993255 is an apocalyptic number.

1011993255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011993255 is an abundant number, since it is smaller than the sum of its proper divisors (1274078169).

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

1011993255 is a wasteful number, since it uses less digits than its factorization.

1011993255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14585 (or 14582 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 1011993255 is about 31811.8414273679. The cubic root of 1011993255 is about 1003.9818752912.

The spelling of 1011993255 in words is "one billion, eleven million, nine hundred ninety-three thousand, two hundred fifty-five".