74689063849 has 9 divisors (see below), whose sum is σ = 75839056797. Its totient is φ = 73556264364.

The previous prime is 74689063789. The next prime is 74689063877. The reversal of 74689063849 is 94836098647.

The square root of 74689063849 is 273293.

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

It is not a de Polignac number, because 74689063849 - 2¹³ = 74689055657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74689063879) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18308592 + ... + 18312670.

Almost surely, 2^74689063849 is an apocalyptic number.

74689063849 is the 273293-rd square number.

74689063849 is the 136647-th centered octagonal number.

It is an amenable number.

74689063849 is a deficient number, since it is larger than the sum of its proper divisors (1149992948).

74689063849 is an frugal number, since it uses more digits than its factorization.

74689063849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8292 (or 4146 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 64.

Multiplying 74689063849 by its sum of digits (64), we get a square (4780100086336 = 2186344²).

The spelling of 74689063849 in words is "seventy-four billion, six hundred eighty-nine million, sixty-three thousand, eight hundred forty-nine".