20343917190 has 16 divisors (see below), whose sum is σ = 48825401328. Its totient is φ = 5425044576.

The previous prime is 20343917189. The next prime is 20343917203. The reversal of 20343917190 is 9171934302.

It is a super-2 number, since 2×20343917190² (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, 339065257 + ... + 339065316.

It is an arithmetic number, because the mean of its divisors is an integer number (3051587583).

Almost surely, 2^20343917190 is an apocalyptic number.

20343917190 is an abundant number, since it is smaller than the sum of its proper divisors (28481484138).

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

20343917190 is a wasteful number, since it uses less digits than its factorization.

20343917190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678130583.

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 20343917190 in words is "twenty billion, three hundred forty-three million, nine hundred seventeen thousand, one hundred ninety".