1157661244 has 24 divisors (see below), whose sum is σ = 2051496720. Its totient is φ = 571547136.

The previous prime is 1157661227. The next prime is 1157661287. The reversal of 1157661244 is 4421667511.

It is a congruent number.

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, 178002 + ... + 184390.

It is an arithmetic number, because the mean of its divisors is an integer number (85479030).

Almost surely, 2^1157661244 is an apocalyptic number.

It is an amenable number.

1157661244 is a deficient number, since it is larger than the sum of its proper divisors (893835476).

1157661244 is a wasteful number, since it uses less digits than its factorization.

1157661244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957 (or 6955 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 1157661244 is about 34024.4212882453. The cubic root of 1157661244 is about 1050.0109580111.

The spelling of 1157661244 in words is "one billion, one hundred fifty-seven million, six hundred sixty-one thousand, two hundred forty-four".