1938393030 has 32 divisors (see below), whose sum is σ = 5316735744. Its totient is φ = 443061216.

The previous prime is 1938392993. The next prime is 1938393047. The reversal of 1938393030 is 303938391.

It is a happy number.

1938393030 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938393030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4615012 + ... + 4615431.

It is an arithmetic number, because the mean of its divisors is an integer number (166147992).

Almost surely, 2^1938393030 is an apocalyptic number.

1938393030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1938393030 is an abundant number, since it is smaller than the sum of its proper divisors (3378342714).

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

1938393030 is a wasteful number, since it uses less digits than its factorization.

1938393030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230460.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 1938393030 is about 44027.1851246477. The cubic root of 1938393030 is about 1246.8492445984.

The spelling of 1938393030 in words is "one billion, nine hundred thirty-eight million, three hundred ninety-three thousand, thirty".