2639128951 has 8 divisors (see below), whose sum is σ = 2758921344. Its totient is φ = 2519757240.

The previous prime is 2639128897. The next prime is 2639128981. The reversal of 2639128951 is 1598219362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2639128951 - 2³¹ = 491645303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639128981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92305 + ... + 117466.

It is an arithmetic number, because the mean of its divisors is an integer number (344865168).

Almost surely, 2^2639128951 is an apocalyptic number.

2639128951 is a deficient number, since it is larger than the sum of its proper divisors (119792393).

2639128951 is a wasteful number, since it uses less digits than its factorization.

2639128951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210341.

The product of its digits is 233280, while the sum is 46.

The square root of 2639128951 is about 51372.4532312795. The cubic root of 2639128951 is about 1381.9326263210.

The spelling of 2639128951 in words is "two billion, six hundred thirty-nine million, one hundred twenty-eight thousand, nine hundred fifty-one".