185838806621364 has 192 divisors, whose sum is σ = 474285559996416. Its totient is φ = 56293842640896.

The previous prime is 185838806621327. The next prime is 185838806621371. The reversal of 185838806621364 is 463126608838581.

It is a super-2 number, since 2×185838806621364² (a number of 29 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 63 ways as a sum of consecutive naturals, for example, 7363731354 + ... + 7363756590.

It is an arithmetic number, because the mean of its divisors is an integer number (2470237291648).

Almost surely, 2^{185838806621364} 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 185838806621364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237142779998208).

185838806621364 is an abundant number, since it is smaller than the sum of its proper divisors (288446753375052).

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

185838806621364 is a wasteful number, since it uses less digits than its factorization.

185838806621364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28234 (or 28232 counting only the distinct ones).

The product of its (nonzero) digits is 318504960, while the sum is 69.

The spelling of 185838806621364 in words is "one hundred eighty-five trillion, eight hundred thirty-eight billion, eight hundred six million, six hundred twenty-one thousand, three hundred sixty-four".