2164731451 has 4 divisors (see below), whose sum is σ = 2179260000. Its totient is φ = 2150202904.

The previous prime is 2164731449. The next prime is 2164731463. The reversal of 2164731451 is 1541374612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2164731451 - 2¹ = 2164731449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2164731421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7264051 + ... + 7264348.

It is an arithmetic number, because the mean of its divisors is an integer number (544815000).

Almost surely, 2^2164731451 is an apocalyptic number.

2164731451 is a deficient number, since it is larger than the sum of its proper divisors (14528549).

2164731451 is a wasteful number, since it uses less digits than its factorization.

2164731451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14528548.

The product of its digits is 20160, while the sum is 34.

The square root of 2164731451 is about 46526.6746179006. The cubic root of 2164731451 is about 1293.6039777441.

The spelling of 2164731451 in words is "two billion, one hundred sixty-four million, seven hundred thirty-one thousand, four hundred fifty-one".