2151438726 has 32 divisors (see below), whose sum is σ = 4335222528. Its totient is φ = 711770400.

The previous prime is 2151438701. The next prime is 2151438733. The reversal of 2151438726 is 6278341512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753201 + ... + 756051.

It is an arithmetic number, because the mean of its divisors is an integer number (135475704).

Almost surely, 2^2151438726 is an apocalyptic number.

2151438726 is an abundant number, since it is smaller than the sum of its proper divisors (2183783802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151438726 is a wasteful number, since it uses less digits than its factorization.

2151438726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756.

The product of its digits is 80640, while the sum is 39.

The square root of 2151438726 is about 46383.6040643674. The cubic root of 2151438726 is about 1290.9507095420.

The spelling of 2151438726 in words is "two billion, one hundred fifty-one million, four hundred thirty-eight thousand, seven hundred twenty-six".