1198736172 has 60 divisors (see below), whose sum is σ = 3270002736. Its totient is φ = 382203360.

The previous prime is 1198736131. The next prime is 1198736173. The reversal of 1198736172 is 2716378911.

It is a super-2 number, since 2×1198736172² = 2873936820122427168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1198736173) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72979 + ... + 87882.

Almost surely, 2^1198736172 is an apocalyptic number.

1198736172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1198736172 is an abundant number, since it is smaller than the sum of its proper divisors (2071266564).

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

1198736172 is a wasteful number, since it uses less digits than its factorization.

1198736172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160900 (or 160889 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 1198736172 is about 34622.7695599298. The cubic root of 1198736172 is about 1062.2853776786.

The spelling of 1198736172 in words is "one billion, one hundred ninety-eight million, seven hundred thirty-six thousand, one hundred seventy-two".