1388188230 has 192 divisors, whose sum is σ = 4118446080. Its totient is φ = 296904960.

The previous prime is 1388188223. The next prime is 1388188303. The reversal of 1388188230 is 328818831.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1084731 + ... + 1086009.

It is an arithmetic number, because the mean of its divisors is an integer number (21450240).

Almost surely, 2^1388188230 is an apocalyptic number.

1388188230 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 1388188230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059223040).

1388188230 is an abundant number, since it is smaller than the sum of its proper divisors (2730257850).

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

1388188230 is a wasteful number, since it uses less digits than its factorization.

1388188230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 1388188230 is about 37258.3981137139. The cubic root of 1388188230 is about 1115.5339342532.

The spelling of 1388188230 in words is "one billion, three hundred eighty-eight million, one hundred eighty-eight thousand, two hundred thirty".