2645498739 has 16 divisors (see below), whose sum is σ = 3921204224. Its totient is φ = 1575482400.

The previous prime is 2645498717. The next prime is 2645498743. The reversal of 2645498739 is 9378945462.

It is not a de Polignac number, because 2645498739 - 2¹¹ = 2645496691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645498759) 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, 1092877 + ... + 1095294.

It is an arithmetic number, because the mean of its divisors is an integer number (245075264).

Almost surely, 2^2645498739 is an apocalyptic number.

2645498739 is a deficient number, since it is larger than the sum of its proper divisors (1275705485).

2645498739 is a wasteful number, since it uses less digits than its factorization.

2645498739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188218.

The product of its digits is 13063680, while the sum is 57.

The square root of 2645498739 is about 51434.4120118039. The cubic root of 2645498739 is about 1383.0435415156.

The spelling of 2645498739 in words is "two billion, six hundred forty-five million, four hundred ninety-eight thousand, seven hundred thirty-nine".