168157412 has 6 divisors (see below), whose sum is σ = 294275478. Its totient is φ = 84078704.

The previous prime is 168157369. The next prime is 168157417. The reversal of 168157412 is 214751861.

It can be written as a sum of positive squares in only one way, i.e., 135163876 + 32993536 = 11626^2 + 5744^2 .

It is not an unprimeable number, because it can be changed into a prime (168157417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21019673 + ... + 21019680.

It is an arithmetic number, because the mean of its divisors is an integer number (49045913).

Almost surely, 2^168157412 is an apocalyptic number.

It is an amenable number.

168157412 is a deficient number, since it is larger than the sum of its proper divisors (126118066).

168157412 is a wasteful number, since it uses less digits than its factorization.

168157412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42039357 (or 42039355 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 168157412 is about 12967.5522748127. The cubic root of 168157412 is about 551.9571178968.

The spelling of 168157412 in words is "one hundred sixty-eight million, one hundred fifty-seven thousand, four hundred twelve".