168523436 has 12 divisors (see below), whose sum is σ = 295866480. Its totient is φ = 83990160.

The previous prime is 168523427. The next prime is 168523451. The reversal of 168523436 is 634325861.

168523436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 168523436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66491 + ... + 68978.

It is an arithmetic number, because the mean of its divisors is an integer number (24655540).

Almost surely, 2^168523436 is an apocalyptic number.

It is an amenable number.

168523436 is a deficient number, since it is larger than the sum of its proper divisors (127343044).

168523436 is a wasteful number, since it uses less digits than its factorization.

168523436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135784 (or 135782 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 168523436 is about 12981.6576753510. The cubic root of 168523436 is about 552.3573047268.

The spelling of 168523436 in words is "one hundred sixty-eight million, five hundred twenty-three thousand, four hundred thirty-six".