164263863 has 12 divisors (see below), whose sum is σ = 220139240. Its totient is φ = 108951552.

The previous prime is 164263849. The next prime is 164263867. The reversal of 164263863 is 368362461.

It is not a de Polignac number, because 164263863 - 2¹³ = 164255671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164263867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197733 + ... + 198561.

Almost surely, 2^164263863 is an apocalyptic number.

164263863 is a deficient number, since it is larger than the sum of its proper divisors (55875377).

164263863 is an frugal number, since it uses more digits than its factorization.

164263863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1089 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 164263863 is about 12816.5464537059. The cubic root of 164263863 is about 547.6637686937.

The spelling of 164263863 in words is "one hundred sixty-four million, two hundred sixty-three thousand, eight hundred sixty-three".