1113636400 has 30 divisors (see below), whose sum is σ = 2675512412. Its totient is φ = 445454400.

The previous prime is 1113636361. The next prime is 1113636401. The reversal of 1113636400 is 46363111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1113636401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1391646 + ... + 1392445.

Almost surely, 2^1113636400 is an apocalyptic number.

1113636400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113636400 is an abundant number, since it is smaller than the sum of its proper divisors (1561876012).

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

1113636400 is a wasteful number, since it uses less digits than its factorization.

1113636400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784109 (or 2784098 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1113636400 is about 33371.1911684315. The cubic root of 1113636400 is about 1036.5282409205.

Adding to 1113636400 its reverse (46363111), we get a palindrome (1159999511).

The spelling of 1113636400 in words is "one billion, one hundred thirteen million, six hundred thirty-six thousand, four hundred".