187951199142 has 48 divisors (see below), whose sum is σ = 437459346432. Its totient is φ = 53677607760.

The previous prime is 187951199119. The next prime is 187951199207. The reversal of 187951199142 is 241991159781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 566467 + ... + 834737.

It is an arithmetic number, because the mean of its divisors is an integer number (9113736384).

Almost surely, 2^187951199142 is an apocalyptic number.

187951199142 is an abundant number, since it is smaller than the sum of its proper divisors (249508147290).

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

187951199142 is a wasteful number, since it uses less digits than its factorization.

187951199142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270673 (or 270666 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 57.

The spelling of 187951199142 in words is "one hundred eighty-seven billion, nine hundred fifty-one million, one hundred ninety-nine thousand, one hundred forty-two".