1149391392 has 48 divisors (see below), whose sum is σ = 3081359232. Its totient is φ = 374977280.

The previous prime is 1149391379. The next prime is 1149391457. The reversal of 1149391392 is 2931939411.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1149391392² = 2642201144007395328, which contains 22 as substring.

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, 122859 + ... + 131882.

It is an arithmetic number, because the mean of its divisors is an integer number (64194984).

Almost surely, 2^1149391392 is an apocalyptic number.

1149391392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1149391392 is an abundant number, since it is smaller than the sum of its proper divisors (1931967840).

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

1149391392 is a wasteful number, since it uses less digits than its factorization.

1149391392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254801 (or 254793 counting only the distinct ones).

The product of its digits is 52488, while the sum is 42.

The square root of 1149391392 is about 33902.6752926668. The cubic root of 1149391392 is about 1047.5046996180.

The spelling of 1149391392 in words is "one billion, one hundred forty-nine million, three hundred ninety-one thousand, three hundred ninety-two".