782018642 has 16 divisors (see below), whose sum is σ = 1186261440. Its totient is φ = 386610192.

The previous prime is 782018641. The next prime is 782018651. The reversal of 782018642 is 246810287.

It is a super-2 number, since 2×782018642² = 1223106312871048328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 782018596 and 782018605.

It is not an unprimeable number, because it can be changed into a prime (782018641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148409 + ... + 153587.

It is an arithmetic number, because the mean of its divisors is an integer number (74141340).

Almost surely, 2^782018642 is an apocalyptic number.

782018642 is a deficient number, since it is larger than the sum of its proper divisors (404242798).

782018642 is a wasteful number, since it uses less digits than its factorization.

782018642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 782018642 is about 27964.5962245122. The cubic root of 782018642 is about 921.3098237992.

It can be divided in two parts, 7820 and 18642, that added together give a palindrome (26462).

The spelling of 782018642 in words is "seven hundred eighty-two million, eighteen thousand, six hundred forty-two".