3155428138 has 8 divisors (see below), whose sum is σ = 4776565860. Its totient is φ = 1563239520.

The previous prime is 3155428109. The next prime is 3155428141. The reversal of 3155428138 is 8318245513.

It can be written as a sum of positive squares in 2 ways, for example, as 2725570849 + 429857289 = 52207^2 + 20733^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 3155428138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7237003 + ... + 7237438.

Almost surely, 2^3155428138 is an apocalyptic number.

3155428138 is a deficient number, since it is larger than the sum of its proper divisors (1621137722).

3155428138 is a wasteful number, since it uses less digits than its factorization.

3155428138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14474552.

The product of its digits is 115200, while the sum is 40.

The square root of 3155428138 is about 56173.1976835928. The cubic root of 3155428138 is about 1466.7387460329.

The spelling of 3155428138 in words is "three billion, one hundred fifty-five million, four hundred twenty-eight thousand, one hundred thirty-eight".