15894464364 has 288 divisors, whose sum is σ = 47262458880. Its totient is φ = 4467032064.

The previous prime is 15894464363. The next prime is 15894464389. The reversal of 15894464364 is 46346449851.

15894464364 is a `hidden beast` number, since 158 + 9 + 446 + 43 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 15894464364.

It is not an unprimeable number, because it can be changed into a prime (15894464363) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27546444 + ... + 27547020.

It is an arithmetic number, because the mean of its divisors is an integer number (164105760).

Almost surely, 2^15894464364 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 15894464364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23631229440).

15894464364 is an abundant number, since it is smaller than the sum of its proper divisors (31367994516).

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

15894464364 is a wasteful number, since it uses less digits than its factorization.

15894464364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 744 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 15894464364 in words is "fifteen billion, eight hundred ninety-four million, four hundred sixty-four thousand, three hundred sixty-four".