1640793 has 16 divisors (see below), whose sum is σ = 2727936. Its totient is φ = 852240.

The previous prime is 1640773. The next prime is 1640803. The reversal of 1640793 is 3970461.

It is a happy number.

It is not a de Polignac number, because 1640793 - 2⁵ = 1640761 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1640793.

It is not an unprimeable number, because it can be changed into a prime (1640753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3321 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (170496).

2^1640793 is an apocalyptic number.

It is an amenable number.

1640793 is a deficient number, since it is larger than the sum of its proper divisors (1087143).

1640793 is a wasteful number, since it uses less digits than its factorization.

1640793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1640793 is about 1280.9344245511. The cubic root of 1640793 is about 117.9463751360.

The spelling of 1640793 in words is "one million, six hundred forty thousand, seven hundred ninety-three".