20709000190 has 16 divisors (see below), whose sum is σ = 37303374528. Its totient is φ = 8277561376.

The previous prime is 20709000181. The next prime is 20709000217. The reversal of 20709000190 is 9100090702.

It is a super-2 number, since 2×20709000190² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740422 + ... + 767881.

It is an arithmetic number, because the mean of its divisors is an integer number (2331460908).

Almost surely, 2^20709000190 is an apocalyptic number.

20709000190 is a deficient number, since it is larger than the sum of its proper divisors (16594374338).

20709000190 is a wasteful number, since it uses less digits than its factorization.

20709000190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509683.

The product of its (nonzero) digits is 1134, while the sum is 28.

Adding to 20709000190 its reverse (9100090702), we get a palindrome (29809090892).

The spelling of 20709000190 in words is "twenty billion, seven hundred nine million, one hundred ninety", and thus it is an aban number.