5181461999 has 16 divisors (see below), whose sum is σ = 6014383872. Its totient is φ = 4372100928.

The previous prime is 5181461993. The next prime is 5181462007. The reversal of 5181461999 is 9991641815.

It is a cyclic number.

It is not a de Polignac number, because 5181461999 - 2²⁴ = 5164684783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5181461999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181461993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148667 + ... + 180179.

It is an arithmetic number, because the mean of its divisors is an integer number (375898992).

Almost surely, 2^5181461999 is an apocalyptic number.

5181461999 is a deficient number, since it is larger than the sum of its proper divisors (832921873).

5181461999 is a wasteful number, since it uses less digits than its factorization.

5181461999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31886.

The product of its digits is 699840, while the sum is 53.

The square root of 5181461999 is about 71982.3728352991. The cubic root of 5181461999 is about 1730.4169976114.

The spelling of 5181461999 in words is "five billion, one hundred eighty-one million, four hundred sixty-one thousand, nine hundred ninety-nine".