161140160 has 28 divisors (see below), whose sum is σ = 383715768. Its totient is φ = 64455936.

The previous prime is 161140117. The next prime is 161140163. The reversal of 161140160 is 61041161.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161140163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251462 + ... + 252101.

Almost surely, 2^161140160 is an apocalyptic number.

161140160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161140160 is an abundant number, since it is smaller than the sum of its proper divisors (222575608).

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

161140160 is an equidigital number, since it uses as much as digits as its factorization.

161140160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503580 (or 503570 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 161140160 is about 12694.0994166581. The cubic root of 161140160 is about 544.1700016551.

The spelling of 161140160 in words is "one hundred sixty-one million, one hundred forty thousand, one hundred sixty".