5181749357 has 8 divisors (see below), whose sum is σ = 5349182784. Its totient is φ = 5016449088.

The previous prime is 5181749333. The next prime is 5181749383. The reversal of 5181749357 is 7539471815.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5181749357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181749387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528353 + ... + 538070.

It is an arithmetic number, because the mean of its divisors is an integer number (668647848).

Almost surely, 2^5181749357 is an apocalyptic number.

It is an amenable number.

5181749357 is a deficient number, since it is larger than the sum of its proper divisors (167433427).

5181749357 is a wasteful number, since it uses less digits than its factorization.

5181749357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066579.

The product of its digits is 1058400, while the sum is 50.

The square root of 5181749357 is about 71984.3688379637. The cubic root of 5181749357 is about 1730.4489860075.

The spelling of 5181749357 in words is "five billion, one hundred eighty-one million, seven hundred forty-nine thousand, three hundred fifty-seven".