163664854 has 4 divisors (see below), whose sum is σ = 245497284. Its totient is φ = 81832426.

The previous prime is 163664833. The next prime is 163664861. The reversal of 163664854 is 458466361.

It is a happy number.

163664854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 458466361 = 10607 ⋅43223.

It is a self number, because there is not a number n which added to its sum of digits gives 163664854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40916212 + ... + 40916215.

It is an arithmetic number, because the mean of its divisors is an integer number (61374321).

Almost surely, 2^163664854 is an apocalyptic number.

163664854 is a deficient number, since it is larger than the sum of its proper divisors (81832430).

163664854 is an equidigital number, since it uses as much as digits as its factorization.

163664854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81832429.

The product of its digits is 414720, while the sum is 43.

The square root of 163664854 is about 12793.1565299577. The cubic root of 163664854 is about 546.9972494005.

The spelling of 163664854 in words is "one hundred sixty-three million, six hundred sixty-four thousand, eight hundred fifty-four".