37998874489 has 3 divisors (see below), whose sum is σ = 37999069423. Its totient is φ = 37998679556.

The previous prime is 37998874483. The next prime is 37998874553. The reversal of 37998874489 is 98447889973.

The square root of 37998874489 is 194933.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1629333225 + 36369541264 = 40365^2 + 190708^2 .

It is not a de Polignac number, because 37998874489 - 2⁵ = 37998874457 is a prime.

It is a super-2 number, since 2×37998874489² (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 (37998874483) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 97467 + ... + 292399.

Almost surely, 2^37998874489 is an apocalyptic number.

37998874489 is the 194933-rd square number.

37998874489 is the 97467-th centered octagonal number.

It is an amenable number.

37998874489 is a deficient number, since it is larger than the sum of its proper divisors (194934).

37998874489 is an frugal number, since it uses more digits than its factorization.

37998874489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389866 (or 194933 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 76.

The spelling of 37998874489 in words is "thirty-seven billion, nine hundred ninety-eight million, eight hundred seventy-four thousand, four hundred eighty-nine".