1940653 has 16 divisors (see below), whose sum is σ = 2342592. Its totient is φ = 1584000.

The previous prime is 1940639. The next prime is 1940663. The reversal of 1940653 is 3560491.

It is not a de Polignac number, because 1940653 - 2⁵ = 1940621 is a prime.

It is a super-2 number, since 2×1940653² = 7532268132818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5698 + ... + 6028.

It is an arithmetic number, because the mean of its divisors is an integer number (146412).

2^1940653 is an apocalyptic number.

1940653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1940653 is a deficient number, since it is larger than the sum of its proper divisors (401939).

1940653 is a wasteful number, since it uses less digits than its factorization.

1940653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1940653 is about 1393.0732213348. The cubic root of 1940653 is about 124.7333623058.

The spelling of 1940653 in words is "one million, nine hundred forty thousand, six hundred fifty-three".