168083780 has 12 divisors (see below), whose sum is σ = 352975980. Its totient is φ = 67233504.

The previous prime is 168083761. The next prime is 168083789. The reversal of 168083780 is 87380861.

It can be written as a sum of positive squares in 2 ways, for example, as 53465344 + 114618436 = 7312^2 + 10706^2 .

It is a super-4 number, since 4×168083780⁴ (a number of 34 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (168083789) 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, 4202075 + ... + 4202114.

It is an arithmetic number, because the mean of its divisors is an integer number (29414665).

Almost surely, 2^168083780 is an apocalyptic number.

168083780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168083780 is an abundant number, since it is smaller than the sum of its proper divisors (184892200).

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

168083780 is a wasteful number, since it uses less digits than its factorization.

168083780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404198 (or 8404196 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 168083780 is about 12964.7128776537. The cubic root of 168083780 is about 551.8765433140.

The spelling of 168083780 in words is "one hundred sixty-eight million, eighty-three thousand, seven hundred eighty".