238449138730 has 48 divisors (see below), whose sum is σ = 494168058144. Its totient is φ = 82145144160.

The previous prime is 238449138649. The next prime is 238449138737. The reversal of 238449138730 is 37831944832.

It is a super-2 number, since 2×238449138730² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238449138737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2962672 + ... + 3042091.

It is an arithmetic number, because the mean of its divisors is an integer number (10295167878).

Almost surely, 2^238449138730 is an apocalyptic number.

238449138730 is an abundant number, since it is smaller than the sum of its proper divisors (255718919414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238449138730 is a wasteful number, since it uses less digits than its factorization.

238449138730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004819 (or 6004800 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 238449138730 in words is "two hundred thirty-eight billion, four hundred forty-nine million, one hundred thirty-eight thousand, seven hundred thirty".