1938239030 has 48 divisors (see below), whose sum is σ = 4317564384. Its totient is φ = 613416960.

The previous prime is 1938239021. The next prime is 1938239033. The reversal of 1938239030 is 309328391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938239033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70091 + ... + 93750.

It is an arithmetic number, because the mean of its divisors is an integer number (89949258).

Almost surely, 2^1938239030 is an apocalyptic number.

1938239030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1938239030 is an abundant number, since it is smaller than the sum of its proper divisors (2379325354).

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

1938239030 is a wasteful number, since it uses less digits than its factorization.

1938239030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163881 (or 163868 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 1938239030 is about 44025.4361704685. The cubic root of 1938239030 is about 1246.8162241417.

The spelling of 1938239030 in words is "one billion, nine hundred thirty-eight million, two hundred thirty-nine thousand, thirty".