1662786313 has 8 divisors (see below), whose sum is σ = 1679512320. Its totient is φ = 1646082480.

The previous prime is 1662786287. The next prime is 1662786329. The reversal of 1662786313 is 3136872661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1662786313 - 2¹³ = 1662778121 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 1662786313.

It is not an unprimeable number, because it can be changed into a prime (1662786383) 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 7 ways as a sum of consecutive naturals, for example, 173928 + ... + 183238.

It is an arithmetic number, because the mean of its divisors is an integer number (209939040).

Almost surely, 2^1662786313 is an apocalyptic number.

It is an amenable number.

1662786313 is a deficient number, since it is larger than the sum of its proper divisors (16726007).

1662786313 is a wasteful number, since it uses less digits than its factorization.

1662786313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11087.

The product of its digits is 217728, while the sum is 43.

The square root of 1662786313 is about 40777.2769198729. The cubic root of 1662786313 is about 1184.7102528845.

The spelling of 1662786313 in words is "one billion, six hundred sixty-two million, seven hundred eighty-six thousand, three hundred thirteen".