238394898049 has 81 divisors (see below), whose sum is σ = 324674678601. Its totient is φ = 174366339840.

The previous prime is 238394898047. The next prime is 238394898059. The reversal of 238394898049 is 940898493832.

The square root of 238394898049 is 488257.

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

It can be written as a sum of positive squares in 4 ways, for example, as 26371486449 + 212023411600 = 162393^2 + 460460^2 .

It is not a de Polignac number, because 238394898049 - 2¹ = 238394898047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238394898047) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 639128227 + ... + 639128599.

Almost surely, 2^238394898049 is an apocalyptic number.

238394898049 is the 488257-th square number.

238394898049 is the 244129-th centered octagonal number.

It is an amenable number.

238394898049 is a deficient number, since it is larger than the sum of its proper divisors (86279780552).

238394898049 is an equidigital number, since it uses as much as digits as its factorization.

238394898049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 67.

The spelling of 238394898049 in words is "two hundred thirty-eight billion, three hundred ninety-four million, eight hundred ninety-eight thousand, forty-nine".