38242540249 has 9 divisors (see below), whose sum is σ = 38505791541. Its totient is φ = 37981080540.

The previous prime is 38242540241. The next prime is 38242540277. The reversal of 38242540249 is 94204524283.

It is a happy number.

The square root of 38242540249 is 195557.

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

It is not a de Polignac number, because 38242540249 - 2³ = 38242540241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38242540241) 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, 32657434 + ... + 32658604.

Almost surely, 2^38242540249 is an apocalyptic number.

38242540249 is the 195557-th square number.

38242540249 is the 97779-th centered octagonal number.

It is an amenable number.

38242540249 is a deficient number, since it is larger than the sum of its proper divisors (263251292).

38242540249 is an frugal number, since it uses more digits than its factorization.

38242540249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 38242540249 in words is "thirty-eight billion, two hundred forty-two million, five hundred forty thousand, two hundred forty-nine".