372171983481 has 9 divisors (see below), whose sum is σ = 537584397519. Its totient is φ = 248113435536.

The previous prime is 372171983471. The next prime is 372171983543. The reversal of 372171983481 is 184389171273.

The square root of 372171983481 is 610059.

It is a perfect power (a square), and thus also a powerful number.

372171983481 is a `hidden beast` number, since 3 + 7 + 2 + 1 + 71 + 98 + 3 + 481 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12632636025 + 359539347456 = 112395^2 + 599616^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 372171983481 - 2²⁵ = 372138429049 is a prime.

It is a super-2 number, since 2×372171983481² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (372171983411) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1728501 + ... + 1931853.

Almost surely, 2^372171983481 is an apocalyptic number.

372171983481 is the 610059-th square number.

372171983481 is the 305030-th centered octagonal number.

It is an amenable number.

372171983481 is a deficient number, since it is larger than the sum of its proper divisors (165412414038).

372171983481 is an frugal number, since it uses more digits than its factorization.

372171983481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406712 (or 203356 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 372171983481 in words is "three hundred seventy-two billion, one hundred seventy-one million, nine hundred eighty-three thousand, four hundred eighty-one".