1158640564 has 6 divisors (see below), whose sum is σ = 2027620994. Its totient is φ = 579320280.

The previous prime is 1158640541. The next prime is 1158640573. The reversal of 1158640564 is 4650468511.

It can be written as a sum of positive squares in only one way, i.e., 762312100 + 396328464 = 27610^2 + 19908^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144830067 + ... + 144830074.

Almost surely, 2^1158640564 is an apocalyptic number.

It is an amenable number.

1158640564 is a deficient number, since it is larger than the sum of its proper divisors (868980430).

1158640564 is a wasteful number, since it uses less digits than its factorization.

1158640564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289660145 (or 289660143 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1158640564 is about 34038.8096736651. The cubic root of 1158640564 is about 1050.3069590826.

The spelling of 1158640564 in words is "one billion, one hundred fifty-eight million, six hundred forty thousand, five hundred sixty-four".