1938542 has 4 divisors (see below), whose sum is σ = 2907816. Its totient is φ = 969270.

The previous prime is 1938533. The next prime is 1938553. The reversal of 1938542 is 2458391.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1938499 and 1938508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484634 + ... + 484637.

It is an arithmetic number, because the mean of its divisors is an integer number (726954).

2^1938542 is an apocalyptic number.

1938542 is a deficient number, since it is larger than the sum of its proper divisors (969274).

1938542 is an equidigital number, since it uses as much as digits as its factorization.

1938542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969273.

The product of its digits is 8640, while the sum is 32.

The square root of 1938542 is about 1392.3153378456. The cubic root of 1938542 is about 124.6881184866.

The spelling of 1938542 in words is "one million, nine hundred thirty-eight thousand, five hundred forty-two".