1129815315 has 24 divisors (see below), whose sum is σ = 2043493920. Its totient is φ = 576369024.

The previous prime is 1129815307. The next prime is 1129815319. The reversal of 1129815315 is 5135189211.

1129815315 is a `hidden beast` number, since 112 + 9 + 8 + 1 + 531 + 5 = 666.

It is not a de Polignac number, because 1129815315 - 2³ = 1129815307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1129815315.

It is not an unprimeable number, because it can be changed into a prime (1129815319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544770 + ... + 546839.

It is an arithmetic number, because the mean of its divisors is an integer number (85145580).

Almost surely, 2^1129815315 is an apocalyptic number.

1129815315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1129815315 is a deficient number, since it is larger than the sum of its proper divisors (913678605).

1129815315 is a wasteful number, since it uses less digits than its factorization.

1129815315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091643 (or 1091640 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 1129815315 is about 33612.7254919919. The cubic root of 1129815315 is about 1041.5236895886.

The spelling of 1129815315 in words is "one billion, one hundred twenty-nine million, eight hundred fifteen thousand, three hundred fifteen".