1564248996 has 120 divisors (see below), whose sum is σ = 4228386624. Its totient is φ = 503979840.

The previous prime is 1564248991. The next prime is 1564249003. The reversal of 1564248996 is 6998424651.

1564248996 is a `hidden beast` number, since 1 + 56 + 424 + 89 + 96 = 666.

1564248996 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1564248991) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1218571 + ... + 1219853.

Almost surely, 2^1564248996 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 1564248996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2114193312).

1564248996 is an abundant number, since it is smaller than the sum of its proper divisors (2664137628).

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

1564248996 is a wasteful number, since it uses less digits than its factorization.

1564248996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 1412 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1564248996 is about 39550.5878085269. The cubic root of 1564248996 is about 1160.8300133717.

The spelling of 1564248996 in words is "one billion, five hundred sixty-four million, two hundred forty-eight thousand, nine hundred ninety-six".