2738928157 has 12 divisors (see below), whose sum is σ = 3373518780. Its totient is φ = 2209554816.

The previous prime is 2738928139. The next prime is 2738928161. The reversal of 2738928157 is 7518298372.

It can be written as a sum of positive squares in 2 ways, for example, as 2371592601 + 367335556 = 48699^2 + 19166^2 .

It is not a de Polignac number, because 2738928157 - 2⁷ = 2738928029 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 (2738928107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1643182 + ... + 1644847.

It is an arithmetic number, because the mean of its divisors is an integer number (281126565).

Almost surely, 2^2738928157 is an apocalyptic number.

It is an amenable number.

2738928157 is a deficient number, since it is larger than the sum of its proper divisors (634590623).

2738928157 is a wasteful number, since it uses less digits than its factorization.

2738928157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288060 (or 3288053 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The square root of 2738928157 is about 52334.7700577733. The cubic root of 2738928157 is about 1399.1369096868.

The spelling of 2738928157 in words is "two billion, seven hundred thirty-eight million, nine hundred twenty-eight thousand, one hundred fifty-seven".