37985172481 has 4 divisors (see below), whose sum is σ = 37987469572. Its totient is φ = 37982875392.

The previous prime is 37985172479. The next prime is 37985172493. The reversal of 37985172481 is 18427158973.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34200954225 + 3784218256 = 184935^2 + 61516^2 .

It is a cyclic number.

It is not a de Polignac number, because 37985172481 - 2¹ = 37985172479 is a prime.

It is a super-2 number, since 2×37985172481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37985172431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123560 + ... + 1156873.

It is an arithmetic number, because the mean of its divisors is an integer number (9496867393).

Almost surely, 2^37985172481 is an apocalyptic number.

It is an amenable number.

37985172481 is a deficient number, since it is larger than the sum of its proper divisors (2297091).

37985172481 is a wasteful number, since it uses less digits than its factorization.

37985172481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297090.

The product of its digits is 3386880, while the sum is 55.

The spelling of 37985172481 in words is "thirty-seven billion, nine hundred eighty-five million, one hundred seventy-two thousand, four hundred eighty-one".