1129165515 has 40 divisors (see below), whose sum is σ = 2032021728. Its totient is φ = 599875200.

The previous prime is 1129165511. The next prime is 1129165529. The reversal of 1129165515 is 5155619211.

1129165515 is a `hidden beast` number, since 1 + 12 + 91 + 6 + 551 + 5 = 666.

It is not a de Polignac number, because 1129165515 - 2² = 1129165511 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1129165515.

It is not an unprimeable number, because it can be changed into a prime (1129165511) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 101215 + ... + 111815.

Almost surely, 2^1129165515 is an apocalyptic number.

1129165515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1129165515 is a deficient number, since it is larger than the sum of its proper divisors (902856213).

1129165515 is a wasteful number, since it uses less digits than its factorization.

1129165515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10881 (or 10872 counting only the distinct ones).

The product of its digits is 13500, while the sum is 36.

The square root of 1129165515 is about 33603.0581197605. The cubic root of 1129165515 is about 1041.3239779267.

The spelling of 1129165515 in words is "one billion, one hundred twenty-nine million, one hundred sixty-five thousand, five hundred fifteen".