238170352729 has 9 divisors (see below), whose sum is σ = 240469769631. Its totient is φ = 235892730720.

The previous prime is 238170352709. The next prime is 238170352741. The reversal of 238170352729 is 927253071832.

The square root of 238170352729 is 488027.

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

It can be written as a sum of positive squares in only one way, i.e., 79734511129 + 158435841600 = 282373^2 + 398040^2 .

It is not a de Polignac number, because 238170352729 - 2³⁵ = 203810614361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238170352709) 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, 52216609 + ... + 52221169.

Almost surely, 2^238170352729 is an apocalyptic number.

238170352729 is the 488027-th square number.

238170352729 is the 244014-th centered octagonal number.

It is an amenable number.

238170352729 is a deficient number, since it is larger than the sum of its proper divisors (2299416902).

238170352729 is an frugal number, since it uses more digits than its factorization.

238170352729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

Multiplying 238170352729 by its sum of digits (49), we get a square (11670347283721 = 3416189²).

The spelling of 238170352729 in words is "two hundred thirty-eight billion, one hundred seventy million, three hundred fifty-two thousand, seven hundred twenty-nine".