1113387408 has 90 divisors (see below), whose sum is σ = 3624685974. Its totient is φ = 318108672.

The previous prime is 1113387389. The next prime is 1113387421. The reversal of 1113387408 is 8047833111.

It can be written as a sum of positive squares in only one way, i.e., 950365584 + 163021824 = 30828^2 + 12768^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 71841 + ... + 85952.

Almost surely, 2^1113387408 is an apocalyptic number.

1113387408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1113387408 is an abundant number, since it is smaller than the sum of its proper divisors (2511298566).

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

1113387408 is a wasteful number, since it uses less digits than its factorization.

1113387408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157821 (or 157805 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1113387408 is about 33367.4603169016. The cubic root of 1113387408 is about 1036.4509845626.

It can be divided in two parts, 1113 and 387408, that added together give a triangular number (388521 = T₈₈₁).

The spelling of 1113387408 in words is "one billion, one hundred thirteen million, three hundred eighty-seven thousand, four hundred eight".