20189230975 has 6 divisors (see below), whose sum is σ = 25034646440. Its totient is φ = 16151384760.

The previous prime is 20189230969. The next prime is 20189230979. The reversal of 20189230975 is 57903298102.

It is not a de Polignac number, because 20189230975 - 2¹³ = 20189222783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20189230979) 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, 403784595 + ... + 403784644.

Almost surely, 2^20189230975 is an apocalyptic number.

20189230975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20189230975 is a deficient number, since it is larger than the sum of its proper divisors (4845415465).

20189230975 is an equidigital number, since it uses as much as digits as its factorization.

20189230975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807569249 (or 807569244 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 20189230975 in words is "twenty billion, one hundred eighty-nine million, two hundred thirty thousand, nine hundred seventy-five".