188708130 has 80 divisors (see below), whose sum is σ = 546477624. Its totient is φ = 46448640.

The previous prime is 188708099. The next prime is 188708147. The reversal of 188708130 is 31807881.

It can be written as a sum of positive squares in 4 ways, for example, as 56205009 + 132503121 = 7497^2 + 11511^2 .

It is a super-2 number, since 2×188708130² = 71221516656193800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1570 + ... + 19490.

Almost surely, 2^188708130 is an apocalyptic number.

188708130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 188708130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273238812).

188708130 is an abundant number, since it is smaller than the sum of its proper divisors (357769494).

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

188708130 is a wasteful number, since it uses less digits than its factorization.

188708130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17953 (or 17944 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 188708130 is about 13737.1077742005. The cubic root of 188708130 is about 573.5837914049.

It can be divided in two parts, 18870 and 8130, that added together give a cube (27000 = 30³).

The spelling of 188708130 in words is "one hundred eighty-eight million, seven hundred eight thousand, one hundred thirty".