18002930625 has 45 divisors (see below), whose sum is σ = 32513063583. Its totient is φ = 9596196000.

The previous prime is 18002930467. The next prime is 18002930639. The reversal of 18002930625 is 52603920081.

The square root of 18002930625 is 134175.

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

18002930625 is a `hidden beast` number, since 1 + 8 + 0 + 0 + 29 + 3 + 0 + 625 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 4456764081 + 13546166544 = 66759^2 + 116388^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 18002930625 - 2¹¹ = 18002928577 is a prime.

It is a super-2 number, since 2×18002930625² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18002930625.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 10062231 + ... + 10064019.

Almost surely, 2^18002930625 is an apocalyptic number.

18002930625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18002930625 is the 134175-th square number.

18002930625 is the 67088-th centered octagonal number.

It is an amenable number.

18002930625 is a deficient number, since it is larger than the sum of its proper divisors (14510132958).

18002930625 is an frugal number, since it uses more digits than its factorization.

18002930625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Multiplying 18002930625 by its sum of digits (36), we get a square (648105502500 = 805050²).

The spelling of 18002930625 in words is "eighteen billion, two million, nine hundred thirty thousand, six hundred twenty-five".