920173237 has 2 divisors, whose sum is σ = 920173238. Its totient is φ = 920173236.

The previous prime is 920173231. The next prime is 920173253. The reversal of 920173237 is 732371029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718561636 + 201611601 = 26806^2 + 14199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920173237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920173231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460086618 + 460086619.

It is an arithmetic number, because the mean of its divisors is an integer number (460086619).

Almost surely, 2^920173237 is an apocalyptic number.

It is an amenable number.

920173237 is a deficient number, since it is larger than the sum of its proper divisors (1).

920173237 is an equidigital number, since it uses as much as digits as its factorization.

920173237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 920173237 is about 30334.3573691615. The cubic root of 920173237 is about 972.6498688986.

The spelling of 920173237 in words is "nine hundred twenty million, one hundred seventy-three thousand, two hundred thirty-seven".