20189683415 has 16 divisors (see below), whose sum is σ = 26461693440. Its totient is φ = 14665871520.

The previous prime is 20189683411. The next prime is 20189683433. The reversal of 20189683415 is 51438698102.

It is a happy number.

It is not a de Polignac number, because 20189683415 - 2² = 20189683411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20189683415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20189683411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172619 + ... + 264908.

It is an arithmetic number, because the mean of its divisors is an integer number (1653855840).

Almost surely, 2^20189683415 is an apocalyptic number.

20189683415 is a deficient number, since it is larger than the sum of its proper divisors (6272010025).

20189683415 is a wasteful number, since it uses less digits than its factorization.

20189683415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438382.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 20189683415 in words is "twenty billion, one hundred eighty-nine million, six hundred eighty-three thousand, four hundred fifteen".