1011099988 has 12 divisors (see below), whose sum is σ = 1770385792. Its totient is φ = 505275480.

The previous prime is 1011099961. The next prime is 1011099989. The reversal of 1011099988 is 8899901101.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011099989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60228 + ... + 75163.

Almost surely, 2^1011099988 is an apocalyptic number.

It is an amenable number.

1011099988 is a deficient number, since it is larger than the sum of its proper divisors (759285804).

1011099988 is a wasteful number, since it uses less digits than its factorization.

1011099988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137262 (or 137260 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 46.

The square root of 1011099988 is about 31797.7984772531. The cubic root of 1011099988 is about 1003.6863898313.

The spelling of 1011099988 in words is "one billion, eleven million, ninety-nine thousand, nine hundred eighty-eight".