1938078 has 12 divisors (see below), whose sum is σ = 4199208. Its totient is φ = 646020.

The previous prime is 1938073. The next prime is 1938103. The reversal of 1938078 is 8708391.

It is a super-2 number, since 2×1938078² = 7512292668168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53818 + ... + 53853.

It is an arithmetic number, because the mean of its divisors is an integer number (349934).

2^1938078 is an apocalyptic number.

1938078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1938078 is an abundant number, since it is smaller than the sum of its proper divisors (2261130).

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

1938078 is a wasteful number, since it uses less digits than its factorization.

1938078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107679 (or 107676 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1938078 is about 1392.1486989542. The cubic root of 1938078 is about 124.6781694452.

The spelling of 1938078 in words is "one million, nine hundred thirty-eight thousand, seventy-eight".