1156497684 has 72 divisors (see below), whose sum is σ = 2853197760. Its totient is φ = 364595264.

The previous prime is 1156497679. The next prime is 1156497691. The reversal of 1156497684 is 4867946511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12994312 + ... + 12994400.

Almost surely, 2^1156497684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156497684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426598880).

1156497684 is an abundant number, since it is smaller than the sum of its proper divisors (1696700076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1156497684 is an frugal number, since it uses more digits than its factorization.

1156497684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 117 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 1156497684 is about 34007.3180947866. The cubic root of 1156497684 is about 1049.6590530214.

The spelling of 1156497684 in words is "one billion, one hundred fifty-six million, four hundred ninety-seven thousand, six hundred eighty-four".