1802640358573 has 4 divisors (see below), whose sum is σ = 1825458591040. Its totient is φ = 1779822126108.

The previous prime is 1802640358543. The next prime is 1802640358579. The reversal of 1802640358573 is 3758530462081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1802640358573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1802640358573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802640358579) 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, 11409116115 + ... + 11409116272.

It is an arithmetic number, because the mean of its divisors is an integer number (456364647760).

Almost surely, 2^{1802640358573} is an apocalyptic number.

It is an amenable number.

1802640358573 is a deficient number, since it is larger than the sum of its proper divisors (22818232467).

1802640358573 is an equidigital number, since it uses as much as digits as its factorization.

1802640358573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22818232466.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 1802640358573 in words is "one trillion, eight hundred two billion, six hundred forty million, three hundred fifty-eight thousand, five hundred seventy-three".