1157384666 has 16 divisors (see below), whose sum is σ = 1769349120. Its totient is φ = 567673920.

The previous prime is 1157384663. The next prime is 1157384671. The reversal of 1157384666 is 6664837511.

It is a self number, because there is not a number n which added to its sum of digits gives 1157384666.

It is not an unprimeable number, because it can be changed into a prime (1157384663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14375 + ... + 50213.

It is an arithmetic number, because the mean of its divisors is an integer number (110584320).

Almost surely, 2^1157384666 is an apocalyptic number.

1157384666 is a deficient number, since it is larger than the sum of its proper divisors (611964454).

1157384666 is a wasteful number, since it uses less digits than its factorization.

1157384666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36149.

The product of its digits is 725760, while the sum is 47.

The square root of 1157384666 is about 34020.3566412817. The cubic root of 1157384666 is about 1049.9273316300.

The spelling of 1157384666 in words is "one billion, one hundred fifty-seven million, three hundred eighty-four thousand, six hundred sixty-six".