18199497037 has 2 divisors, whose sum is σ = 18199497038. Its totient is φ = 18199497036.

The previous prime is 18199497023. The next prime is 18199497053. The reversal of 18199497037 is 73079499181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11353754916 + 6845742121 = 106554^2 + 82739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18199497037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18199494037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9099748518 + 9099748519.

It is an arithmetic number, because the mean of its divisors is an integer number (9099748519).

Almost surely, 2^18199497037 is an apocalyptic number.

It is an amenable number.

18199497037 is a deficient number, since it is larger than the sum of its proper divisors (1).

18199497037 is an equidigital number, since it uses as much as digits as its factorization.

18199497037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 18199497037 in words is "eighteen billion, one hundred ninety-nine million, four hundred ninety-seven thousand, thirty-seven".