4591515138 has 32 divisors (see below), whose sum is σ = 10526066304. Its totient is φ = 1307964672.

The previous prime is 4591515127. The next prime is 4591515191. The reversal of 4591515138 is 8315151954.

It is a super-2 number, since 2×4591515138² = 42164022524966318088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 4591515138.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148045 + ... + 176352.

It is an arithmetic number, because the mean of its divisors is an integer number (328939572).

Almost surely, 2^4591515138 is an apocalyptic number.

4591515138 is an abundant number, since it is smaller than the sum of its proper divisors (5934551166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4591515138 is a wasteful number, since it uses less digits than its factorization.

4591515138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324746.

The product of its digits is 108000, while the sum is 42.

The square root of 4591515138 is about 67760.7197275826. The cubic root of 4591515138 is about 1662.0803184940.

The spelling of 4591515138 in words is "four billion, five hundred ninety-one million, five hundred fifteen thousand, one hundred thirty-eight".