163313377 has 4 divisors (see below), whose sum is σ = 164560176. Its totient is φ = 162066580.

The previous prime is 163313347. The next prime is 163313389. The reversal of 163313377 is 773313361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163313377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163313327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623203 + ... + 623464.

It is an arithmetic number, because the mean of its divisors is an integer number (41140044).

Almost surely, 2^163313377 is an apocalyptic number.

It is an amenable number.

163313377 is a deficient number, since it is larger than the sum of its proper divisors (1246799).

163313377 is a wasteful number, since it uses less digits than its factorization.

163313377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246798.

The product of its digits is 23814, while the sum is 34.

The square root of 163313377 is about 12779.4122321803. The cubic root of 163313377 is about 546.6054024064.

The spelling of 163313377 in words is "one hundred sixty-three million, three hundred thirteen thousand, three hundred seventy-seven".