163045691 has 8 divisors (see below), whose sum is σ = 172905264. Its totient is φ = 153216000.

The previous prime is 163045681. The next prime is 163045697. The reversal of 163045691 is 196540361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163045691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163045697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4316 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (21613158).

Almost surely, 2^163045691 is an apocalyptic number.

163045691 is a deficient number, since it is larger than the sum of its proper divisors (9859573).

163045691 is a wasteful number, since it uses less digits than its factorization.

163045691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14941.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 163045691 is about 12768.9346070845. The cubic root of 163045691 is about 546.3065931832.

The spelling of 163045691 in words is "one hundred sixty-three million, forty-five thousand, six hundred ninety-one".