187861453912 has 32 divisors (see below), whose sum is σ = 384882955200. Its totient is φ = 85253594400.

The previous prime is 187861453861. The next prime is 187861453919. The reversal of 187861453912 is 219354168781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187861453919) 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, 1669914 + ... + 1778857.

It is an arithmetic number, because the mean of its divisors is an integer number (12027592350).

Almost surely, 2^187861453912 is an apocalyptic number.

It is an amenable number.

187861453912 is an abundant number, since it is smaller than the sum of its proper divisors (197021501288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187861453912 is a wasteful number, since it uses less digits than its factorization.

187861453912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449407 (or 3449403 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The spelling of 187861453912 in words is "one hundred eighty-seven billion, eight hundred sixty-one million, four hundred fifty-three thousand, nine hundred twelve".