19900189527 has 8 divisors (see below), whose sum is σ = 26576453760. Its totient is φ = 13245359160.

The previous prime is 19900189523. The next prime is 19900189537. The reversal of 19900189527 is 72598100991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19900189527 - 2² = 19900189523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19900189527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19900189523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5356299 + ... + 5360012.

It is an arithmetic number, because the mean of its divisors is an integer number (3322056720).

Almost surely, 2^19900189527 is an apocalyptic number.

19900189527 is a deficient number, since it is larger than the sum of its proper divisors (6676264233).

19900189527 is a wasteful number, since it uses less digits than its factorization.

19900189527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10716933.

The product of its (nonzero) digits is 408240, while the sum is 51.

The spelling of 19900189527 in words is "nineteen billion, nine hundred million, one hundred eighty-nine thousand, five hundred twenty-seven".