1018683780365 has 16 divisors (see below), whose sum is σ = 1229638288896. Its totient is φ = 810144148800.

The previous prime is 1018683780347. The next prime is 1018683780377. The reversal of 1018683780365 is 5630873868101.

It is not a de Polignac number, because 1018683780365 - 2¹² = 1018683776269 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 1018683780365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351035 + ... + 1469895.

It is an arithmetic number, because the mean of its divisors is an integer number (76852393056).

Almost surely, 2^{1018683780365} is an apocalyptic number.

It is an amenable number.

1018683780365 is a deficient number, since it is larger than the sum of its proper divisors (210954508531).

1018683780365 is a wasteful number, since it uses less digits than its factorization.

1018683780365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119940.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 1018683780365 in words is "one trillion, eighteen billion, six hundred eighty-three million, seven hundred eighty thousand, three hundred sixty-five".