198940507037 has 2 divisors, whose sum is σ = 198940507038. Its totient is φ = 198940507036.

The previous prime is 198940507009. The next prime is 198940507079. The reversal of 198940507037 is 730705049891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197908427161 + 1032079876 = 444869^2 + 32126^2 .

It is a cyclic number.

It is not a de Polignac number, because 198940507037 - 2¹² = 198940502941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198940507037.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198940507237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99470253518 + 99470253519.

It is an arithmetic number, because the mean of its divisors is an integer number (99470253519).

Almost surely, 2^198940507037 is an apocalyptic number.

It is an amenable number.

198940507037 is a deficient number, since it is larger than the sum of its proper divisors (1).

198940507037 is an equidigital number, since it uses as much as digits as its factorization.

198940507037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 198940507037 in words is "one hundred ninety-eight billion, nine hundred forty million, five hundred seven thousand, thirty-seven".