163426263 has 32 divisors (see below), whose sum is σ = 292572672. Its totient is φ = 78364800.

The previous prime is 163426229. The next prime is 163426271. The reversal of 163426263 is 362624361.

It is not a de Polignac number, because 163426263 - 2¹⁰ = 163425239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163426213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24208 + ... + 30213.

It is an arithmetic number, because the mean of its divisors is an integer number (9142896).

Almost surely, 2^163426263 is an apocalyptic number.

163426263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163426263 is a deficient number, since it is larger than the sum of its proper divisors (129146409).

163426263 is a wasteful number, since it uses less digits than its factorization.

163426263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54455.

The product of its digits is 31104, while the sum is 33.

The square root of 163426263 is about 12783.8281825125. The cubic root of 163426263 is about 546.7313155168.

It can be divided in two parts, 163 and 426263, that added together give a triangular number (426426 = T₉₂₃).

The spelling of 163426263 in words is "one hundred sixty-three million, four hundred twenty-six thousand, two hundred sixty-three".