5149378185 has 32 divisors (see below), whose sum is σ = 9740701440. Its totient is φ = 2272827648.

The previous prime is 5149378177. The next prime is 5149378229. The reversal of 5149378185 is 5818739415.

It is not a de Polignac number, because 5149378185 - 2³ = 5149378177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842502 + ... + 848591.

It is an arithmetic number, because the mean of its divisors is an integer number (304396920).

Almost surely, 2^5149378185 is an apocalyptic number.

It is an amenable number.

5149378185 is a deficient number, since it is larger than the sum of its proper divisors (4591323255).

5149378185 is a wasteful number, since it uses less digits than its factorization.

5149378185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691137.

The product of its digits is 1209600, while the sum is 51.

The square root of 5149378185 is about 71759.1679508619. The cubic root of 5149378185 is about 1726.8379972197.

The spelling of 5149378185 in words is "five billion, one hundred forty-nine million, three hundred seventy-eight thousand, one hundred eighty-five".