37818147461 has 2 divisors, whose sum is σ = 37818147462. Its totient is φ = 37818147460.

The previous prime is 37818147431. The next prime is 37818147469. The reversal of 37818147461 is 16474181873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19035444961 + 18782702500 = 137969^2 + 137050^2 .

It is a cyclic number.

It is not a de Polignac number, because 37818147461 - 2³⁴ = 20638278277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37818147469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18909073730 + 18909073731.

It is an arithmetic number, because the mean of its divisors is an integer number (18909073731).

Almost surely, 2^37818147461 is an apocalyptic number.

It is an amenable number.

37818147461 is a deficient number, since it is larger than the sum of its proper divisors (1).

37818147461 is an equidigital number, since it uses as much as digits as its factorization.

37818147461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 50.

The spelling of 37818147461 in words is "thirty-seven billion, eight hundred eighteen million, one hundred forty-seven thousand, four hundred sixty-one".