187989530399 has 8 divisors (see below), whose sum is σ = 205165792848. Its totient is φ = 170827652160.

The previous prime is 187989530381. The next prime is 187989530401. The reversal of 187989530399 is 993035989781.

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

It is not a de Polignac number, because 187989530399 - 2³² = 183694563103 is a prime.

It is a super-3 number, since 3×187989530399³ (a number of 35 digits) contains 333 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 (187989530299) 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, 3568712 + ... + 3621005.

It is an arithmetic number, because the mean of its divisors is an integer number (25645724106).

Almost surely, 2^187989530399 is an apocalyptic number.

187989530399 is a deficient number, since it is larger than the sum of its proper divisors (17176262449).

187989530399 is a wasteful number, since it uses less digits than its factorization.

187989530399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7192105.

The product of its (nonzero) digits is 132269760, while the sum is 71.

The spelling of 187989530399 in words is "one hundred eighty-seven billion, nine hundred eighty-nine million, five hundred thirty thousand, three hundred ninety-nine".