163265890 has 16 divisors (see below), whose sum is σ = 298697400. Its totient is φ = 64235520.

The previous prime is 163265873. The next prime is 163265939. The reversal of 163265890 is 98562361.

163265890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 86545809 + 76720081 = 9303^2 + 8759^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133215 + ... + 134434.

Almost surely, 2^163265890 is an apocalyptic number.

163265890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163265890 is a deficient number, since it is larger than the sum of its proper divisors (135431510).

163265890 is a wasteful number, since it uses less digits than its factorization.

163265890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267717.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 163265890 is about 12777.5541478015. The cubic root of 163265890 is about 546.5524180409.

The spelling of 163265890 in words is "one hundred sixty-three million, two hundred sixty-five thousand, eight hundred ninety".