137487448849 has 3 divisors (see below), whose sum is σ = 137487819643. Its totient is φ = 137487078056.

The previous prime is 137487448781. The next prime is 137487448853. The reversal of 137487448849 is 948844784731.

The square root of 137487448849 is 370793.

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, and also an emirpimes, since its reverse is a distinct semiprime: 948844784731 = 29671 ⋅31978861.

It can be written as a sum of positive squares in only one way, i.e., 69245291025 + 68242157824 = 263145^2 + 261232^2 .

It is a de Polignac number, because none of the positive numbers 2^k-137487448849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137487448859) 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, 185397 + ... + 556189.

Almost surely, 2^137487448849 is an apocalyptic number.

137487448849 is the 370793-rd square number.

137487448849 is the 185397-th centered octagonal number.

It is an amenable number.

137487448849 is a deficient number, since it is larger than the sum of its proper divisors (370794).

137487448849 is an frugal number, since it uses more digits than its factorization.

137487448849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741586 (or 370793 counting only the distinct ones).

The product of its digits is 173408256, while the sum is 67.

The spelling of 137487448849 in words is "one hundred thirty-seven billion, four hundred eighty-seven million, four hundred forty-eight thousand, eight hundred forty-nine".