168375940 has 12 divisors (see below), whose sum is σ = 353589516. Its totient is φ = 67350368.

The previous prime is 168375931. The next prime is 168375959. The reversal of 168375940 is 49573861.

It can be written as a sum of positive squares in 2 ways, for example, as 38962564 + 129413376 = 6242^2 + 11376^2 .

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, 4209379 + ... + 4209418.

It is an arithmetic number, because the mean of its divisors is an integer number (29465793).

Almost surely, 2^168375940 is an apocalyptic number.

168375940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168375940 is an abundant number, since it is smaller than the sum of its proper divisors (185213576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168375940 is a wasteful number, since it uses less digits than its factorization.

168375940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418806 (or 8418804 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 168375940 is about 12975.9754931951. The cubic root of 168375940 is about 552.1961119675.

The spelling of 168375940 in words is "one hundred sixty-eight million, three hundred seventy-five thousand, nine hundred forty".