2169229638 has 32 divisors (see below), whose sum is σ = 4492481760. Its totient is φ = 697455360.

The previous prime is 2169229607. The next prime is 2169229661. The reversal of 2169229638 is 8369229612.

It is a happy number.

It is a super-2 number, since 2×2169229638² = 9411114444755222088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188778 + ... + 199938.

It is an arithmetic number, because the mean of its divisors is an integer number (140390055).

Almost surely, 2^2169229638 is an apocalyptic number.

2169229638 is an abundant number, since it is smaller than the sum of its proper divisors (2323252122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2169229638 is a wasteful number, since it uses less digits than its factorization.

2169229638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12312.

The product of its digits is 559872, while the sum is 48.

The square root of 2169229638 is about 46574.9894041856. The cubic root of 2169229638 is about 1294.4993693045.

The spelling of 2169229638 in words is "two billion, one hundred sixty-nine million, two hundred twenty-nine thousand, six hundred thirty-eight".