1782801313 has 4 divisors (see below), whose sum is σ = 1783011328. Its totient is φ = 1782591300.

The previous prime is 1782801287. The next prime is 1782801347. The reversal of 1782801313 is 3131082871.

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 not a de Polignac number, because 1782801313 - 2⁹ = 1782800801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1782805313) 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, 91713 + ... + 109438.

It is an arithmetic number, because the mean of its divisors is an integer number (445752832).

Almost surely, 2^1782801313 is an apocalyptic number.

It is an amenable number.

1782801313 is a deficient number, since it is larger than the sum of its proper divisors (210015).

1782801313 is an equidigital number, since it uses as much as digits as its factorization.

1782801313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210014.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1782801313 is about 42223.2319108805. The cubic root of 1782801313 is about 1212.5537016354.

The spelling of 1782801313 in words is "one billion, seven hundred eighty-two million, eight hundred one thousand, three hundred thirteen".