74389289536 has 63 divisors (see below), whose sum is σ = 149515031043. Its totient is φ = 36722252160.

The previous prime is 74389289483. The next prime is 74389289549. The reversal of 74389289536 is 63598298347.

The square root of 74389289536 is 272744.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 224740891 + ... + 224741221.

It is an arithmetic number, because the mean of its divisors is an integer number (2373254461).

Almost surely, 2^74389289536 is an apocalyptic number.

74389289536 is the 272744-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74389289536

74389289536 is an abundant number, since it is smaller than the sum of its proper divisors (75125741507).

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

74389289536 is an frugal number, since it uses more digits than its factorization.

74389289536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 436 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 64.

Multiplying 74389289536 by its sum of digits (64), we get a square (4760914530304 = 2181952²).

74389289536 divided by its sum of digits (64) gives a square (1162332649 = 34093²).

The spelling of 74389289536 in words is "seventy-four billion, three hundred eighty-nine million, two hundred eighty-nine thousand, five hundred thirty-six".