1018863912 has 32 divisors (see below), whose sum is σ = 2778720480. Its totient is φ = 308746560.

The previous prime is 1018863863. The next prime is 1018863917. The reversal of 1018863912 is 2193688101.

It is not an unprimeable number, because it can be changed into a prime (1018863917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1929403 + ... + 1929930.

It is an arithmetic number, because the mean of its divisors is an integer number (86835015).

Almost surely, 2^1018863912 is an apocalyptic number.

1018863912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1018863912 is an abundant number, since it is smaller than the sum of its proper divisors (1759856568).

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

1018863912 is a wasteful number, since it uses less digits than its factorization.

1018863912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3859353 (or 3859349 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1018863912 is about 31919.6477424172. The cubic root of 1018863912 is about 1006.2488413139.

The spelling of 1018863912 in words is "one billion, eighteen million, eight hundred sixty-three thousand, nine hundred twelve".