163900472 has 24 divisors (see below), whose sum is σ = 317561400. Its totient is φ = 79302960.

The previous prime is 163900463. The next prime is 163900481. The reversal of 163900472 is 274009361.

It is an interprime number because it is at equal distance from previous prime (163900463) and next prime (163900481).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2972 + ... + 18347.

It is an arithmetic number, because the mean of its divisors is an integer number (13231725).

Almost surely, 2^163900472 is an apocalyptic number.

It is an amenable number.

163900472 is a deficient number, since it is larger than the sum of its proper divisors (153660928).

163900472 is a wasteful number, since it uses less digits than its factorization.

163900472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21387 (or 21352 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 163900472 is about 12802.3619695742. The cubic root of 163900472 is about 547.2596160524.

The spelling of 163900472 in words is "one hundred sixty-three million, nine hundred thousand, four hundred seventy-two".