186379820 has 96 divisors (see below), whose sum is σ = 441987840. Its totient is φ = 65442560.

The previous prime is 186379801. The next prime is 186379829. The reversal of 186379820 is 28973681.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (186379829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1077254 + ... + 1077426.

It is an arithmetic number, because the mean of its divisors is an integer number (4604040).

Almost surely, 2^186379820 is an apocalyptic number.

186379820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186379820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220993920).

186379820 is an abundant number, since it is smaller than the sum of its proper divisors (255608020).

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

186379820 is a wasteful number, since it uses less digits than its factorization.

186379820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 186379820 is about 13652.0994722424. The cubic root of 186379820 is about 571.2150340821.

The spelling of 186379820 in words is "one hundred eighty-six million, three hundred seventy-nine thousand, eight hundred twenty".