2649481239 has 16 divisors (see below), whose sum is σ = 3747860480. Its totient is φ = 1660176000.

The previous prime is 2649481231. The next prime is 2649481253. The reversal of 2649481239 is 9321849462.

It is not a de Polignac number, because 2649481239 - 2³ = 2649481231 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 (2649481231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175762 + ... + 190239.

It is an arithmetic number, because the mean of its divisors is an integer number (234241280).

Almost surely, 2^2649481239 is an apocalyptic number.

2649481239 is a deficient number, since it is larger than the sum of its proper divisors (1098379241).

2649481239 is a wasteful number, since it uses less digits than its factorization.

2649481239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366150.

The product of its digits is 746496, while the sum is 48.

The square root of 2649481239 is about 51473.1118060682. Note that the first 3 decimals coincide. The cubic root of 2649481239 is about 1383.7371989164.

The spelling of 2649481239 in words is "two billion, six hundred forty-nine million, four hundred eighty-one thousand, two hundred thirty-nine".