187912322136 has 384 divisors, whose sum is σ = 684527500800. Its totient is φ = 45069373440.

The previous prime is 187912322113. The next prime is 187912322137. The reversal of 187912322136 is 631223219781.

It is a happy number.

187912322136 is a `hidden beast` number, since 187 + 9 + 12 + 322 + 136 = 666.

It is a super-2 number, since 2×187912322136² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 187912322091 and 187912322100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187912322137) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4976335 + ... + 5013953.

It is an arithmetic number, because the mean of its divisors is an integer number (1782623700).

Almost surely, 2^187912322136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187912322136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342263750400).

187912322136 is an abundant number, since it is smaller than the sum of its proper divisors (496615178664).

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

187912322136 is a wasteful number, since it uses less digits than its factorization.

187912322136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37719 (or 37712 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The spelling of 187912322136 in words is "one hundred eighty-seven billion, nine hundred twelve million, three hundred twenty-two thousand, one hundred thirty-six".