168630037 has 2 divisors, whose sum is σ = 168630038. Its totient is φ = 168630036.

The previous prime is 168630029. The next prime is 168630071. The reversal of 168630037 is 730036861.

It is an a-pointer prime, because the next prime (168630071) can be obtained adding 168630037 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93876721 + 74753316 = 9689^2 + 8646^2 .

It is a cyclic number.

It is not a de Polignac number, because 168630037 - 2³ = 168630029 is a prime.

It is a super-4 number, since 4×168630037⁴ (a number of 34 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168629984 and 168630011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168636037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84315018 + 84315019.

It is an arithmetic number, because the mean of its divisors is an integer number (84315019).

Almost surely, 2^168630037 is an apocalyptic number.

It is an amenable number.

168630037 is a deficient number, since it is larger than the sum of its proper divisors (1).

168630037 is an equidigital number, since it uses as much as digits as its factorization.

168630037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 168630037 is about 12985.7628578378. The cubic root of 168630037 is about 552.4737463553.

Adding to 168630037 its reverse (730036861), we get a palindrome (898666898).

The spelling of 168630037 in words is "one hundred sixty-eight million, six hundred thirty thousand, thirty-seven".