5185138635 has 24 divisors (see below), whose sum is σ = 9516255840. Its totient is φ = 2602735872.

The previous prime is 5185138633. The next prime is 5185138639. The reversal of 5185138635 is 5368315815.

5185138635 is a `hidden beast` number, since 5 + 1 + 8 + 5 + 1 + 3 + 8 + 635 = 666.

It is not a de Polignac number, because 5185138635 - 2¹ = 5185138633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5185138631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3388215 + ... + 3389744.

It is an arithmetic number, because the mean of its divisors is an integer number (396510660).

Almost surely, 2^5185138635 is an apocalyptic number.

5185138635 is a deficient number, since it is larger than the sum of its proper divisors (4331117205).

5185138635 is a wasteful number, since it uses less digits than its factorization.

5185138635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777987 (or 6777984 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 5185138635 is about 72007.9067533559. The cubic root of 5185138635 is about 1730.8261877347.

The spelling of 5185138635 in words is "five billion, one hundred eighty-five million, one hundred thirty-eight thousand, six hundred thirty-five".