18107562149 has 2 divisors, whose sum is σ = 18107562150. Its totient is φ = 18107562148.

The previous prime is 18107562103. The next prime is 18107562173. The reversal of 18107562149 is 94126570181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9373725124 + 8733837025 = 96818^2 + 93455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18107562149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18157562149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9053781074 + 9053781075.

It is an arithmetic number, because the mean of its divisors is an integer number (9053781075).

Almost surely, 2^18107562149 is an apocalyptic number.

It is an amenable number.

18107562149 is a deficient number, since it is larger than the sum of its proper divisors (1).

18107562149 is an equidigital number, since it uses as much as digits as its factorization.

18107562149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 18107562149 in words is "eighteen billion, one hundred seven million, five hundred sixty-two thousand, one hundred forty-nine".