1157684863 has 8 divisors (see below), whose sum is σ = 1195422336. Its totient is φ = 1119972000.

The previous prime is 1157684861. The next prime is 1157684909. The reversal of 1157684863 is 3684867511.

It is a happy number.

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 1157684863 - 2¹ = 1157684861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157684861) 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, 169413 + ... + 176113.

It is an arithmetic number, because the mean of its divisors is an integer number (149427792).

Almost surely, 2^1157684863 is an apocalyptic number.

1157684863 is a deficient number, since it is larger than the sum of its proper divisors (37737473).

1157684863 is an equidigital number, since it uses as much as digits as its factorization.

1157684863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12305.

The product of its digits is 967680, while the sum is 49.

The square root of 1157684863 is about 34024.7683754056. The cubic root of 1157684863 is about 1050.0180988566.

The spelling of 1157684863 in words is "one billion, one hundred fifty-seven million, six hundred eighty-four thousand, eight hundred sixty-three".