163612140 has 48 divisors (see below), whose sum is σ = 469294560. Its totient is φ = 42565120.

The previous prime is 163612121. The next prime is 163612147. The reversal of 163612140 is 41216361.

It is a self number, because there is not a number n which added to its sum of digits gives 163612140.

It is not an unprimeable number, because it can be changed into a prime (163612147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30795 + ... + 35714.

It is an arithmetic number, because the mean of its divisors is an integer number (9776970).

Almost surely, 2^163612140 is an apocalyptic number.

163612140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163612140 is an abundant number, since it is smaller than the sum of its proper divisors (305682420).

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

163612140 is a wasteful number, since it uses less digits than its factorization.

163612140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66562 (or 66560 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 163612140 is about 12791.0961219123. The cubic root of 163612140 is about 546.9385165519.

The spelling of 163612140 in words is "one hundred sixty-three million, six hundred twelve thousand, one hundred forty".