5185381787 has 8 divisors (see below), whose sum is σ = 5209659840. Its totient is φ = 5161127040.

The previous prime is 5185381783. The next prime is 5185381819. The reversal of 5185381787 is 7871835815.

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

It is a cyclic number.

It is not a de Polignac number, because 5185381787 - 2² = 5185381783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5185381783) 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, 569789 + ... + 578817.

It is an arithmetic number, because the mean of its divisors is an integer number (651207480).

Almost surely, 2^5185381787 is an apocalyptic number.

5185381787 is a deficient number, since it is larger than the sum of its proper divisors (24278053).

5185381787 is a wasteful number, since it uses less digits than its factorization.

5185381787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11653.

The product of its digits is 1881600, while the sum is 53.

The square root of 5185381787 is about 72009.5951037082. The cubic root of 5185381787 is about 1730.8532424450.

The spelling of 5185381787 in words is "five billion, one hundred eighty-five million, three hundred eighty-one thousand, seven hundred eighty-seven".