8619549131 has 2 divisors, whose sum is σ = 8619549132. Its totient is φ = 8619549130.

The previous prime is 8619549091. The next prime is 8619549137. The reversal of 8619549131 is 1319459168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8619549131 is a prime.

It is a super-2 number, since 2×8619549131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8619549137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4309774565 + 4309774566.

It is an arithmetic number, because the mean of its divisors is an integer number (4309774566).

Almost surely, 2^8619549131 is an apocalyptic number.

8619549131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8619549131 is an equidigital number, since it uses as much as digits as its factorization.

8619549131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 47.

The square root of 8619549131 is about 92841.5269747326. The cubic root of 8619549131 is about 2050.3508525804.

The spelling of 8619549131 in words is "eight billion, six hundred nineteen million, five hundred forty-nine thousand, one hundred thirty-one".