1147815020 has 24 divisors (see below), whose sum is σ = 2629540368. Its totient is φ = 417387200.

The previous prime is 1147815013. The next prime is 1147815077. The reversal of 1147815020 is 205187411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2608451 + ... + 2608890.

It is an arithmetic number, because the mean of its divisors is an integer number (109564182).

Almost surely, 2^1147815020 is an apocalyptic number.

1147815020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1147815020 is an abundant number, since it is smaller than the sum of its proper divisors (1481725348).

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

1147815020 is a wasteful number, since it uses less digits than its factorization.

1147815020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217361 (or 5217359 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1147815020 is about 33879.4188261841. The cubic root of 1147815020 is about 1047.0256018518.

The spelling of 1147815020 in words is "one billion, one hundred forty-seven million, eight hundred fifteen thousand, twenty".