1149491788 has 24 divisors (see below), whose sum is σ = 2141001072. Its totient is φ = 538128384.

The previous prime is 1149491767. The next prime is 1149491843. The reversal of 1149491788 is 8871949411.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30670 + ... + 56917.

It is an arithmetic number, because the mean of its divisors is an integer number (89208378).

Almost surely, 2^1149491788 is an apocalyptic number.

It is an amenable number.

1149491788 is a deficient number, since it is larger than the sum of its proper divisors (991509284).

1149491788 is a wasteful number, since it uses less digits than its factorization.

1149491788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87801 (or 87799 counting only the distinct ones).

The product of its digits is 580608, while the sum is 52.

The square root of 1149491788 is about 33904.1559104485. The cubic root of 1149491788 is about 1047.5351975611.

The spelling of 1149491788 in words is "one billion, one hundred forty-nine million, four hundred ninety-one thousand, seven hundred eighty-eight".