21830522190 has 16 divisors (see below), whose sum is σ = 52393253328. Its totient is φ = 5821472576.

The previous prime is 21830522179. The next prime is 21830522213. The reversal of 21830522190 is 9122503812.

It is a happy number.

It is a super-2 number, since 2×21830522190² (a number of 21 digits) 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363842007 + ... + 363842066.

It is an arithmetic number, because the mean of its divisors is an integer number (3274578333).

Almost surely, 2^21830522190 is an apocalyptic number.

21830522190 is an abundant number, since it is smaller than the sum of its proper divisors (30562731138).

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

21830522190 is a wasteful number, since it uses less digits than its factorization.

21830522190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727684083.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 21830522190 in words is "twenty-one billion, eight hundred thirty million, five hundred twenty-two thousand, one hundred ninety".