20107195389 has 6 divisors (see below), whose sum is σ = 29043726686. Its totient is φ = 13404796920.

The previous prime is 20107195363. The next prime is 20107195391. The reversal of 20107195389 is 98359170102.

20107195389 is a `hidden beast` number, since 2 + 0 + 107 + 1 + 9 + 538 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18986084100 + 1121111289 = 137790^2 + 33483^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20107195389 is a prime.

It is a super-2 number, since 2×20107195389² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107195489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117066402 + ... + 1117066419.

Almost surely, 2^20107195389 is an apocalyptic number.

It is an amenable number.

20107195389 is a deficient number, since it is larger than the sum of its proper divisors (8936531297).

20107195389 is a wasteful number, since it uses less digits than its factorization.

20107195389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234132827 (or 2234132824 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

It can be divided in two parts, 20107 and 195389, that added together give a triangular number (215496 = T₆₅₆).

The spelling of 20107195389 in words is "twenty billion, one hundred seven million, one hundred ninety-five thousand, three hundred eighty-nine".