163390634 has 16 divisors (see below), whose sum is σ = 267628320. Its totient is φ = 74195760.

The previous prime is 163390627. The next prime is 163390681. The reversal of 163390634 is 436093361.

163390634 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163390594 and 163390603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24017 + ... + 30059.

It is an arithmetic number, because the mean of its divisors is an integer number (16726770).

Almost surely, 2^163390634 is an apocalyptic number.

163390634 is a deficient number, since it is larger than the sum of its proper divisors (104237686).

163390634 is a wasteful number, since it uses less digits than its factorization.

163390634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 163390634 is about 12782.4345881370. The cubic root of 163390634 is about 546.6915811733.

The spelling of 163390634 in words is "one hundred sixty-three million, three hundred ninety thousand, six hundred thirty-four".