21830951198 has 32 divisors (see below), whose sum is σ = 38580261120. Its totient is φ = 9071524800.

The previous prime is 21830951179. The next prime is 21830951213. The reversal of 21830951198 is 89115903812.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 120728 + ... + 241323.

It is an arithmetic number, because the mean of its divisors is an integer number (1205633160).

Almost surely, 2^21830951198 is an apocalyptic number.

21830951198 is a deficient number, since it is larger than the sum of its proper divisors (16749309922).

21830951198 is a wasteful number, since it uses less digits than its factorization.

21830951198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362192.

The product of its (nonzero) digits is 155520, while the sum is 47.

The spelling of 21830951198 in words is "twenty-one billion, eight hundred thirty million, nine hundred fifty-one thousand, one hundred ninety-eight".