1938530 has 16 divisors (see below), whose sum is σ = 3806784. Its totient is φ = 704880.

The previous prime is 1938499. The next prime is 1938533. The reversal of 1938530 is 358391.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1938493 and 1938502.

It is not an unprimeable number, because it can be changed into a prime (1938533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8702 + ... + 8921.

It is an arithmetic number, because the mean of its divisors is an integer number (237924).

2^1938530 is an apocalyptic number.

1938530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1938530 is a deficient number, since it is larger than the sum of its proper divisors (1868254).

1938530 is a wasteful number, since it uses less digits than its factorization.

1938530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17641.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1938530 is about 1392.3110284703. The cubic root of 1938530 is about 124.6878612038.

The spelling of 1938530 in words is "one million, nine hundred thirty-eight thousand, five hundred thirty".