5149387278 has 48 divisors (see below), whose sum is σ = 13500920160. Its totient is φ = 1384708608.

The previous prime is 5149387249. The next prime is 5149387289. The reversal of 5149387278 is 8727839415.

It is a happy number.

5149387278 is a `hidden beast` number, since 5 + 1 + 493 + 87 + 2 + 78 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1199863 + ... + 1204146.

It is an arithmetic number, because the mean of its divisors is an integer number (281269170).

Almost surely, 2^5149387278 is an apocalyptic number.

5149387278 is an abundant number, since it is smaller than the sum of its proper divisors (8351532882).

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

5149387278 is a wasteful number, since it uses less digits than its factorization.

5149387278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404041 (or 2404038 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 5149387278 is about 71759.2313085919. The cubic root of 5149387278 is about 1726.8390136615.

The spelling of 5149387278 in words is "five billion, one hundred forty-nine million, three hundred eighty-seven thousand, two hundred seventy-eight".