1977938 has 8 divisors (see below), whose sum is σ = 3123120. Its totient is φ = 936900.

The previous prime is 1977929. The next prime is 1977953. The reversal of 1977938 is 8397791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25988 + ... + 26063.

It is an arithmetic number, because the mean of its divisors is an integer number (390390).

2^1977938 is an apocalyptic number.

1977938 is a deficient number, since it is larger than the sum of its proper divisors (1145182).

1977938 is a wasteful number, since it uses less digits than its factorization.

1977938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52072.

The product of its digits is 95256, while the sum is 44.

The square root of 1977938 is about 1406.3918372914. The cubic root of 1977938 is about 125.5271180480.

The spelling of 1977938 in words is "one million, nine hundred seventy-seven thousand, nine hundred thirty-eight".