1940531 has 4 divisors (see below), whose sum is σ = 1947672. Its totient is φ = 1933392.

The previous prime is 1940509. The next prime is 1940537. The reversal of 1940531 is 1350491.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1940531 - 2¹⁴ = 1924147 is a prime.

It is a super-2 number, since 2×1940531² = 7531321123922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1940497 and 1940506.

It is not an unprimeable number, because it can be changed into a prime (1940537) 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, 3146 + ... + 3711.

It is an arithmetic number, because the mean of its divisors is an integer number (486918).

2^1940531 is an apocalyptic number.

1940531 is a deficient number, since it is larger than the sum of its proper divisors (7141).

1940531 is an equidigital number, since it uses as much as digits as its factorization.

1940531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1940531 is about 1393.0294325677. The cubic root of 1940531 is about 124.7307484452.

The spelling of 1940531 in words is "one million, nine hundred forty thousand, five hundred thirty-one".