1129872931 has 8 divisors (see below), whose sum is σ = 1248192000. Its totient is φ = 1014154440.

The previous prime is 1129872929. The next prime is 1129872937. The reversal of 1129872931 is 1392789211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1129872931 - 2¹ = 1129872929 is a prime.

It is a super-2 number, since 2×1129872931² = 2553225680413061522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1129872937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649231 + ... + 650968.

It is an arithmetic number, because the mean of its divisors is an integer number (156024000).

Almost surely, 2^1129872931 is an apocalyptic number.

1129872931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1129872931 is a deficient number, since it is larger than the sum of its proper divisors (118319069).

1129872931 is a wasteful number, since it uses less digits than its factorization.

1129872931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300289.

The product of its digits is 54432, while the sum is 43.

The square root of 1129872931 is about 33613.5825374208. The cubic root of 1129872931 is about 1041.5413937827.

The spelling of 1129872931 in words is "one billion, one hundred twenty-nine million, eight hundred seventy-two thousand, nine hundred thirty-one".