1115900172 has 48 divisors (see below), whose sum is σ = 3045347200. Its totient is φ = 352388880.

The previous prime is 1115900167. The next prime is 1115900173. The reversal of 1115900172 is 2710095111.

1115900172 is a `hidden beast` number, since 1 + 1 + 1 + 590 + 0 + 1 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1115900173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269854 + ... + 273957.

Almost surely, 2^1115900172 is an apocalyptic number.

1115900172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1115900172 is an abundant number, since it is smaller than the sum of its proper divisors (1929447028).

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

1115900172 is a wasteful number, since it uses less digits than its factorization.

1115900172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543843 (or 543835 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The square root of 1115900172 is about 33405.0920070578. The cubic root of 1115900172 is about 1037.2301083816.

Adding to 1115900172 its reverse (2710095111), we get a palindrome (3825995283).

The spelling of 1115900172 in words is "one billion, one hundred fifteen million, nine hundred thousand, one hundred seventy-two".