163490069 has 4 divisors (see below), whose sum is σ = 163516140. Its totient is φ = 163464000.

The previous prime is 163490053. The next prime is 163490077. The reversal of 163490069 is 960094361.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 960094361 = 719 ⋅1335319.

It can be written as a sum of positive squares in 2 ways, for example, as 54538225 + 108951844 = 7385^2 + 10438^2 .

It is a cyclic number.

It is not a de Polignac number, because 163490069 - 2⁴ = 163490053 is a prime.

It is a super-2 number, since 2×163490069² = 53458005323249522, 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 (163490669) 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, 2717 + ... + 18285.

It is an arithmetic number, because the mean of its divisors is an integer number (40879035).

Almost surely, 2^163490069 is an apocalyptic number.

It is an amenable number.

163490069 is a deficient number, since it is larger than the sum of its proper divisors (26071).

163490069 is a wasteful number, since it uses less digits than its factorization.

163490069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26070.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 163490069 is about 12786.3235138174. The cubic root of 163490069 is about 546.8024591194.

It can be divided in two parts, 1634 and 90069, that multiplied together give a triangular number (147172746 = T₁₇₁₅₆).

The spelling of 163490069 in words is "one hundred sixty-three million, four hundred ninety thousand, sixty-nine".