5181374520 has 128 divisors (see below), whose sum is σ = 19738598400. Its totient is φ = 1184312448.

The previous prime is 5181374507. The next prime is 5181374533. The reversal of 5181374520 is 254731815.

5181374520 is a `hidden beast` number, since 51 + 8 + 13 + 74 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (5181374507) and next prime (5181374533).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335124 + ... + 350243.

It is an arithmetic number, because the mean of its divisors is an integer number (154207800).

Almost surely, 2^5181374520 is an apocalyptic number.

It is an amenable number.

5181374520 is an abundant number, since it is smaller than the sum of its proper divisors (14557223880).

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

5181374520 is a wasteful number, since it uses less digits than its factorization.

5181374520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685394 (or 685384 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 5181374520 is about 71981.7651909148. The cubic root of 5181374520 is about 1730.4072593046.

The spelling of 5181374520 in words is "five billion, one hundred eighty-one million, three hundred seventy-four thousand, five hundred twenty".