37198961 has 2 divisors, whose sum is σ = 37198962. Its totient is φ = 37198960.

The previous prime is 37198943. The next prime is 37198963. The reversal of 37198961 is 16989173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36784225 + 414736 = 6065^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 37198961 - 2⁶ = 37198897 is a prime.

Together with 37198963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37198963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18599480 + 18599481.

It is an arithmetic number, because the mean of its divisors is an integer number (18599481).

Almost surely, 2^37198961 is an apocalyptic number.

It is an amenable number.

37198961 is a deficient number, since it is larger than the sum of its proper divisors (1).

37198961 is an equidigital number, since it uses as much as digits as its factorization.

37198961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 37198961 is about 6099.0950968156. The cubic root of 37198961 is about 333.8183990137.

The spelling of 37198961 in words is "thirty-seven million, one hundred ninety-eight thousand, nine hundred sixty-one".