1149515992 has 8 divisors (see below), whose sum is σ = 2155342500. Its totient is φ = 574757992.

The previous prime is 1149515987. The next prime is 1149515999. The reversal of 1149515992 is 2995159411.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149515999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71844742 + ... + 71844757.

Almost surely, 2^1149515992 is an apocalyptic number.

It is an amenable number.

1149515992 is a deficient number, since it is larger than the sum of its proper divisors (1005826508).

1149515992 is a wasteful number, since it uses less digits than its factorization.

1149515992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143689505 (or 143689501 counting only the distinct ones).

The product of its digits is 145800, while the sum is 46.

The square root of 1149515992 is about 33904.5128559606. The cubic root of 1149515992 is about 1047.5425499013.

The spelling of 1149515992 in words is "one billion, one hundred forty-nine million, five hundred fifteen thousand, nine hundred ninety-two".