2925619921 has 9 divisors (see below), whose sum is σ = 3403712649. Its totient is φ = 2507349684.

The previous prime is 2925619919. The next prime is 2925619937. The reversal of 2925619921 is 1299165292.

The square root of 2925619921 is 54089.

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

2925619921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2925619921 - 2¹ = 2925619919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2925619901) 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, 374760 + ... + 382486.

Almost surely, 2^2925619921 is an apocalyptic number.

2925619921 is the 54089-th square number.

2925619921 is the 27045-th centered octagonal number.

It is an amenable number.

2925619921 is a deficient number, since it is larger than the sum of its proper divisors (478092728).

2925619921 is an frugal number, since it uses more digits than its factorization.

2925619921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15468 (or 7734 counting only the distinct ones).

The product of its digits is 174960, while the sum is 46.

The cubic root of 2925619921 is about 1430.2302791490.

The spelling of 2925619921 in words is "two billion, nine hundred twenty-five million, six hundred nineteen thousand, nine hundred twenty-one".