1149136878 has 32 divisors (see below), whose sum is σ = 2319996672. Its totient is φ = 379440000.

The previous prime is 1149136829. The next prime is 1149136897. The reversal of 1149136878 is 8786319411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361725 + ... + 364887.

It is an arithmetic number, because the mean of its divisors is an integer number (72499896).

Almost surely, 2^1149136878 is an apocalyptic number.

1149136878 is an abundant number, since it is smaller than the sum of its proper divisors (1170859794).

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

1149136878 is a wasteful number, since it uses less digits than its factorization.

1149136878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720.

The product of its digits is 290304, while the sum is 48.

The square root of 1149136878 is about 33898.9214872686. The cubic root of 1149136878 is about 1047.4273762931.

The spelling of 1149136878 in words is "one billion, one hundred forty-nine million, one hundred thirty-six thousand, eight hundred seventy-eight".