1938888 has 48 divisors (see below), whose sum is σ = 6002880. Its totient is φ = 553824.

The previous prime is 1938887. The next prime is 1938889. The reversal of 1938888 is 8888391.

It is an interprime number because it is at equal distance from previous prime (1938887) and next prime (1938889).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1938883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1420 + ... + 2427.

It is an arithmetic number, because the mean of its divisors is an integer number (125060).

2^1938888 is an apocalyptic number.

1938888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1938888 is an abundant number, since it is smaller than the sum of its proper divisors (4063992).

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

1938888 is a wasteful number, since it uses less digits than its factorization.

1938888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866 (or 3859 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 1938888 is about 1392.4395857631. The cubic root of 1938888 is about 124.6955363505.

The spelling of 1938888 in words is "one million, nine hundred thirty-eight thousand, eight hundred eighty-eight".