187386609212 has 12 divisors (see below), whose sum is σ = 357738072216. Its totient is φ = 85175731440.

The previous prime is 187386609181. The next prime is 187386609227. The reversal of 187386609212 is 212906683781.

It is a super-2 number, since 2×187386609212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129393243 + ... + 2129393330.

It is an arithmetic number, because the mean of its divisors is an integer number (29811506018).

Almost surely, 2^187386609212 is an apocalyptic number.

It is an amenable number.

187386609212 is a deficient number, since it is larger than the sum of its proper divisors (170351463004).

187386609212 is a wasteful number, since it uses less digits than its factorization.

187386609212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258786588 (or 4258786586 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 187386609212 in words is "one hundred eighty-seven billion, three hundred eighty-six million, six hundred nine thousand, two hundred twelve".