237284920161 has 27 divisors (see below), whose sum is σ = 344452573881. Its totient is φ = 157405685184.

The previous prime is 237284920129. The next prime is 237284920217. The reversal of 237284920161 is 161029482732.

The square root of 237284920161 is 487119.

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 89487731025 + 147797189136 = 299145^2 + 384444^2 .

It is not a de Polignac number, because 237284920161 - 2⁵ = 237284920129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (237284927161) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 580158525 + ... + 580158933.

Almost surely, 2^237284920161 is an apocalyptic number.

237284920161 is the 487119-th square number.

237284920161 is the 243560-th centered octagonal number.

It is an amenable number.

237284920161 is a deficient number, since it is larger than the sum of its proper divisors (107167653720).

237284920161 is an frugal number, since it uses more digits than its factorization.

237284920161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 237284920161 in words is "two hundred thirty-seven billion, two hundred eighty-four million, nine hundred twenty thousand, one hundred sixty-one".