5191506381 has 8 divisors (see below), whose sum is σ = 6976513024. Its totient is φ = 3433752000.

The previous prime is 5191506377. The next prime is 5191506389. The reversal of 5191506381 is 1836051915.

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

It is not a de Polignac number, because 5191506381 - 2² = 5191506377 is a prime.

It is a super-2 number, since 2×5191506381² = 53903477007927434322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5191506389) 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, 6812620 + ... + 6813381.

It is an arithmetic number, because the mean of its divisors is an integer number (872064128).

Almost surely, 2^5191506381 is an apocalyptic number.

It is an amenable number.

5191506381 is a deficient number, since it is larger than the sum of its proper divisors (1785006643).

5191506381 is a wasteful number, since it uses less digits than its factorization.

5191506381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13626131.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 5191506381 is about 72052.1087894032. The cubic root of 5191506381 is about 1731.5344267779.

The spelling of 5191506381 in words is "five billion, one hundred ninety-one million, five hundred six thousand, three hundred eighty-one".