20193939292 has 12 divisors (see below), whose sum is σ = 35617657600. Its totient is φ = 10017465696.

The previous prime is 20193939197. The next prime is 20193939299. The reversal of 20193939292 is 29293939102.

It is a super-2 number, since 2×20193939292² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20193939299) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19875417 + ... + 19876432.

Almost surely, 2^20193939292 is an apocalyptic number.

It is an amenable number.

20193939292 is a deficient number, since it is larger than the sum of its proper divisors (15423718308).

20193939292 is a wasteful number, since it uses less digits than its factorization.

20193939292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39751980 (or 39751978 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

The spelling of 20193939292 in words is "twenty billion, one hundred ninety-three million, nine hundred thirty-nine thousand, two hundred ninety-two".