1156564464 has 160 divisors (see below), whose sum is σ = 3370760448. Its totient is φ = 341510400.

The previous prime is 1156564439. The next prime is 1156564469. The reversal of 1156564464 is 4644656511.

It is a happy number.

Its product of digits (345600) is a multiple of the sum of its prime divisors (480).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156564469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2746974 + ... + 2747394.

Almost surely, 2^1156564464 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 1156564464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685380224).

1156564464 is an abundant number, since it is smaller than the sum of its proper divisors (2214195984).

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

1156564464 is a wasteful number, since it uses less digits than its factorization.

1156564464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 480 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 1156564464 is about 34008.2999281058. The cubic root of 1156564464 is about 1049.6792562273.

The spelling of 1156564464 in words is "one billion, one hundred fifty-six million, five hundred sixty-four thousand, four hundred sixty-four".