1102991904 has 480 divisors, whose sum is σ = 4004453376. Its totient is φ = 291133440.

The previous prime is 1102991899. The next prime is 1102991993. The reversal of 1102991904 is 4091992011.

It is a super-2 number, since 2×1102991904² = 2433182280579090432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20811142 + ... + 20811194.

Almost surely, 2^1102991904 is an apocalyptic number.

1102991904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102991904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002226688).

1102991904 is an abundant number, since it is smaller than the sum of its proper divisors (2901461472).

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

1102991904 is a wasteful number, since it uses less digits than its factorization.

1102991904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 1102991904 is about 33211.3219249099. The cubic root of 1102991904 is about 1033.2151721519.

The spelling of 1102991904 in words is "one billion, one hundred two million, nine hundred ninety-one thousand, nine hundred four".