163465901 has 4 divisors (see below), whose sum is σ = 163492512. Its totient is φ = 163439292.

The previous prime is 163465879. The next prime is 163465903. The reversal of 163465901 is 109564361.

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-163465901 is a prime.

It is a super-2 number, since 2×163465901² = 53442201579483602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163465903) 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, 1130 + ... + 18116.

It is an arithmetic number, because the mean of its divisors is an integer number (40873128).

Almost surely, 2^163465901 is an apocalyptic number.

It is an amenable number.

163465901 is a deficient number, since it is larger than the sum of its proper divisors (26611).

163465901 is an equidigital number, since it uses as much as digits as its factorization.

163465901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26610.

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

The square root of 163465901 is about 12785.3784066018. The cubic root of 163465901 is about 546.7755140106.

The spelling of 163465901 in words is "one hundred sixty-three million, four hundred sixty-five thousand, nine hundred one".