37974377347909 has 2 divisors, whose sum is σ = 37974377347910. Its totient is φ = 37974377347908.

The previous prime is 37974377347901. The next prime is 37974377347943. The reversal of 37974377347909 is 90974377347973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26416485251809 + 11557892096100 = 5139697^2 + 3399690^2 .

It is a cyclic number.

It is not a de Polignac number, because 37974377347909 - 2³ = 37974377347901 is a prime.

It is a super-2 number, since 2×37974377347909² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37974377347901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18987188673954 + 18987188673955.

It is an arithmetic number, because the mean of its divisors is an integer number (18987188673955).

Almost surely, 2^{37974377347909} is an apocalyptic number.

It is an amenable number.

37974377347909 is a deficient number, since it is larger than the sum of its proper divisors (1).

37974377347909 is an equidigital number, since it uses as much as digits as its factorization.

37974377347909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292994896, while the sum is 79.

The spelling of 37974377347909 in words is "thirty-seven trillion, nine hundred seventy-four billion, three hundred seventy-seven million, three hundred forty-seven thousand, nine hundred nine".