2153929761 has 24 divisors (see below), whose sum is σ = 3142339200. Its totient is φ = 1421666496.

The previous prime is 2153929721. The next prime is 2153929777. The reversal of 2153929761 is 1679293512.

It is a happy number.

2153929761 is a `hidden beast` number, since 21 + 539 + 2 + 97 + 6 + 1 = 666.

It is not a de Polignac number, because 2153929761 - 2²⁵ = 2120375329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2153929721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392565 + ... + 398013.

It is an arithmetic number, because the mean of its divisors is an integer number (130930800).

Almost surely, 2^2153929761 is an apocalyptic number.

It is an amenable number.

2153929761 is a deficient number, since it is larger than the sum of its proper divisors (988409439).

2153929761 is a wasteful number, since it uses less digits than its factorization.

2153929761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885 (or 5882 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 2153929761 is about 46410.4488342873. The cubic root of 2153929761 is about 1291.4487581307.

The spelling of 2153929761 in words is "two billion, one hundred fifty-three million, nine hundred twenty-nine thousand, seven hundred sixty-one".