168940522 has 8 divisors (see below), whose sum is σ = 253520676. Its totient is φ = 84433632.

The previous prime is 168940511. The next prime is 168940523. The reversal of 168940522 is 225049861.

168940522 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 156975841 + 11964681 = 12529^2 + 3459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (168940523) 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, 12133 + ... + 22024.

Almost surely, 2^168940522 is an apocalyptic number.

168940522 is a deficient number, since it is larger than the sum of its proper divisors (84580154).

168940522 is a wasteful number, since it uses less digits than its factorization.

168940522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36632.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 168940522 is about 12997.7121833036. The cubic root of 168940522 is about 552.8126137045.

The spelling of 168940522 in words is "one hundred sixty-eight million, nine hundred forty thousand, five hundred twenty-two".