1151376665 has 16 divisors (see below), whose sum is σ = 1442907648. Its totient is φ = 880330176.

The previous prime is 1151376631. The next prime is 1151376703. The reversal of 1151376665 is 5666731511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1151376665 - 2¹² = 1151372569 is a prime.

It is a Duffinian 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, 167639 + ... + 174371.

It is an arithmetic number, because the mean of its divisors is an integer number (90181728).

Almost surely, 2^1151376665 is an apocalyptic number.

It is an amenable number.

1151376665 is a deficient number, since it is larger than the sum of its proper divisors (291530983).

1151376665 is a wasteful number, since it uses less digits than its factorization.

1151376665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8248.

The product of its digits is 113400, while the sum is 41.

The square root of 1151376665 is about 33931.9416626871. The cubic root of 1151376665 is about 1048.1074495161.

The spelling of 1151376665 in words is "one billion, one hundred fifty-one million, three hundred seventy-six thousand, six hundred sixty-five".