163394429 has 8 divisors (see below), whose sum is σ = 188733888. Its totient is φ = 139802560.

The previous prime is 163394401. The next prime is 163394431. The reversal of 163394429 is 924493361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-163394429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163394449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436697 + ... + 437070.

It is an arithmetic number, because the mean of its divisors is an integer number (23591736).

Almost surely, 2^163394429 is an apocalyptic number.

It is an amenable number.

163394429 is a deficient number, since it is larger than the sum of its proper divisors (25339459).

163394429 is a wasteful number, since it uses less digits than its factorization.

163394429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873795.

The product of its digits is 139968, while the sum is 41.

The square root of 163394429 is about 12782.5830331745. The cubic root of 163394429 is about 546.6958137262.

The spelling of 163394429 in words is "one hundred sixty-three million, three hundred ninety-four thousand, four hundred twenty-nine".