102591000949 has 2 divisors, whose sum is σ = 102591000950. Its totient is φ = 102591000948.

The previous prime is 102591000943. The next prime is 102591000959. The reversal of 102591000949 is 949000195201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94567320324 + 8023680625 = 307518^2 + 89575^2 .

It is a cyclic number.

It is not a de Polignac number, because 102591000949 - 2⁹ = 102591000437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102591000943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51295500474 + 51295500475.

It is an arithmetic number, because the mean of its divisors is an integer number (51295500475).

Almost surely, 2^102591000949 is an apocalyptic number.

It is an amenable number.

102591000949 is a deficient number, since it is larger than the sum of its proper divisors (1).

102591000949 is an equidigital number, since it uses as much as digits as its factorization.

102591000949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 102591000949 in words is "one hundred two billion, five hundred ninety-one million, nine hundred forty-nine", and thus it is an aban number.