1157708387 has 8 divisors (see below), whose sum is σ = 1280256240. Its totient is φ = 1038044160.

The previous prime is 1157708353. The next prime is 1157708407. The reversal of 1157708387 is 7838077511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157708387 - 2⁸ = 1157708131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157708317) 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, 720062 + ... + 721667.

It is an arithmetic number, because the mean of its divisors is an integer number (160032030).

Almost surely, 2^1157708387 is an apocalyptic number.

1157708387 is a deficient number, since it is larger than the sum of its proper divisors (122547853).

1157708387 is a wasteful number, since it uses less digits than its factorization.

1157708387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441813.

The product of its (nonzero) digits is 329280, while the sum is 47.

The square root of 1157708387 is about 34025.1140629976. The cubic root of 1157708387 is about 1050.0252108837.

The spelling of 1157708387 in words is "one billion, one hundred fifty-seven million, seven hundred eight thousand, three hundred eighty-seven".