163949269 has 4 divisors (see below), whose sum is σ = 178853760. Its totient is φ = 149044780.

The previous prime is 163949263. The next prime is 163949281. The reversal of 163949269 is 962949361.

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 not a de Polignac number, because 163949269 - 2⁵ = 163949237 is a prime.

It is a super-2 number, since 2×163949269² = 53758725611268722, 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 (163949263) 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, 7452229 + ... + 7452250.

It is an arithmetic number, because the mean of its divisors is an integer number (44713440).

Almost surely, 2^163949269 is an apocalyptic number.

It is an amenable number.

163949269 is a deficient number, since it is larger than the sum of its proper divisors (14904491).

163949269 is a wasteful number, since it uses less digits than its factorization.

163949269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14904490.

The product of its digits is 629856, while the sum is 49.

The square root of 163949269 is about 12804.2676088873. The cubic root of 163949269 is about 547.3139213216.

The spelling of 163949269 in words is "one hundred sixty-three million, nine hundred forty-nine thousand, two hundred sixty-nine".