38549788281 has 9 divisors (see below), whose sum is σ = 55683878341. Its totient is φ = 25699466172.

The previous prime is 38549788259. The next prime is 38549788339. The reversal of 38549788281 is 18288794583.

The square root of 38549788281 is 196341.

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

38549788281 is a `hidden beast` number, since 3 + 8 + 549 + 7 + 8 + 8 + 2 + 81 = 666.

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

It is not a de Polignac number, because 38549788281 - 2²⁷ = 38415570553 is a prime.

It is a super-2 number, since 2×38549788281² (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 (38549788481) 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, 556300 + ... + 621746.

Almost surely, 2^38549788281 is an apocalyptic number.

38549788281 is the 196341-st square number.

38549788281 is the 98171-st centered octagonal number.

It is an amenable number.

38549788281 is a deficient number, since it is larger than the sum of its proper divisors (17134090060).

38549788281 is an frugal number, since it uses more digits than its factorization.

38549788281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130900 (or 65450 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 38549788281 in words is "thirty-eight billion, five hundred forty-nine million, seven hundred eighty-eight thousand, two hundred eighty-one".