8131504919 has 2 divisors, whose sum is σ = 8131504920. Its totient is φ = 8131504918.

The previous prime is 8131504907. The next prime is 8131504951. The reversal of 8131504919 is 9194051318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8131504919 - 2¹² = 8131500823 is a prime.

It is a super-2 number, since 2×8131504919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8131500919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4065752459 + 4065752460.

It is an arithmetic number, because the mean of its divisors is an integer number (4065752460).

Almost surely, 2^8131504919 is an apocalyptic number.

8131504919 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131504919 is an equidigital number, since it uses as much as digits as its factorization.

8131504919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 8131504919 is about 90174.8574659256. The cubic root of 8131504919 is about 2010.8992386519.

The spelling of 8131504919 in words is "eight billion, one hundred thirty-one million, five hundred four thousand, nine hundred nineteen".