168813037 has 4 divisors (see below), whose sum is σ = 168983356. Its totient is φ = 168642720.

The previous prime is 168813023. The next prime is 168813053. The reversal of 168813037 is 730318861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159289641 + 9523396 = 12621^2 + 3086^2 .

It is a cyclic number.

It is not a de Polignac number, because 168813037 - 2⁷ = 168812909 is a prime.

It is a super-2 number, since 2×168813037² = 56995682922326738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168812987 and 168813005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168813067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83664 + ... + 85657.

It is an arithmetic number, because the mean of its divisors is an integer number (42245839).

Almost surely, 2^168813037 is an apocalyptic number.

It is an amenable number.

168813037 is a deficient number, since it is larger than the sum of its proper divisors (170319).

168813037 is an equidigital number, since it uses as much as digits as its factorization.

168813037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170318.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 168813037 is about 12992.8071254829. The cubic root of 168813037 is about 552.6735252058.

The spelling of 168813037 in words is "one hundred sixty-eight million, eight hundred thirteen thousand, thirty-seven".