160681940 has 12 divisors (see below), whose sum is σ = 337432116. Its totient is φ = 64272768.

The previous prime is 160681931. The next prime is 160681949. The reversal of 160681940 is 49186061.

It is an interprime number because it is at equal distance from previous prime (160681931) and next prime (160681949).

It can be written as a sum of positive squares in 2 ways, for example, as 49758916 + 110923024 = 7054^2 + 10532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 160681940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160681949) 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, 4017029 + ... + 4017068.

It is an arithmetic number, because the mean of its divisors is an integer number (28119343).

Almost surely, 2^160681940 is an apocalyptic number.

160681940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

160681940 is an abundant number, since it is smaller than the sum of its proper divisors (176750176).

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

160681940 is a wasteful number, since it uses less digits than its factorization.

160681940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034106 (or 8034104 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 160681940 is about 12676.0380245564. The cubic root of 160681940 is about 543.6537092891.

The spelling of 160681940 in words is "one hundred sixty million, six hundred eighty-one thousand, nine hundred forty".