1938397120 has 224 divisors, whose sum is σ = 5520415680. Its totient is φ = 639959040.

The previous prime is 1938397099. The next prime is 1938397159. The reversal of 1938397120 is 217938391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1734802 + ... + 1735918.

Almost surely, 2^1938397120 is an apocalyptic number.

1938397120 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 1938397120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760207840).

1938397120 is an abundant number, since it is smaller than the sum of its proper divisors (3582018560).

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

1938397120 is a wasteful number, since it uses less digits than its factorization.

1938397120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1938397120 is about 44027.2315731980. The cubic root of 1938397120 is about 1246.8501215464.

The spelling of 1938397120 in words is "one billion, nine hundred thirty-eight million, three hundred ninety-seven thousand, one hundred twenty".