1938001 has 4 divisors (see below), whose sum is σ = 2087092. Its totient is φ = 1788912.

The previous prime is 1937993. The next prime is 1938007. The reversal of 1938001 is 1008391.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 638401 = 1140^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1938001 - 2³ = 1937993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74526 + ... + 74551.

It is an arithmetic number, because the mean of its divisors is an integer number (521773).

2^1938001 is an apocalyptic number.

It is an amenable number.

1938001 is a deficient number, since it is larger than the sum of its proper divisors (149091).

1938001 is a wasteful number, since it uses less digits than its factorization.

1938001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149090.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1938001 is about 1392.1210435878. The cubic root of 1938001 is about 124.6765182653.

The spelling of 1938001 in words is "one million, nine hundred thirty-eight thousand, one".