8174148921 has 9 divisors (see below), whose sum is σ = 11807495791. Its totient is φ = 5449251792.

The previous prime is 8174148911. The next prime is 8174148929. The reversal of 8174148921 is 1298414718.

The square root of 8174148921 is 90411.

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

8174148921 is a `hidden beast` number, since 81 + 74 + 1 + 489 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 651015225 + 7523133696 = 25515^2 + 86736^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-8174148921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8174148929) 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, 256165 + ... + 286301.

Almost surely, 2^8174148921 is an apocalyptic number.

8174148921 is the 90411-st square number.

8174148921 is the 45206-th centered octagonal number.

It is an amenable number.

8174148921 is a deficient number, since it is larger than the sum of its proper divisors (3633346870).

8174148921 is an frugal number, since it uses more digits than its factorization.

8174148921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60280 (or 30140 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The cubic root of 8174148921 is about 2014.4083603931.

The spelling of 8174148921 in words is "eight billion, one hundred seventy-four million, one hundred forty-eight thousand, nine hundred twenty-one".