1679786534 has 16 divisors (see below), whose sum is σ = 2563293600. Its totient is φ = 825468864.

The previous prime is 1679786519. The next prime is 1679786543. The reversal of 1679786534 is 4356879761.

It is a self number, because there is not a number n which added to its sum of digits gives 1679786534.

It is a congruent number.

It is an unprimeable number.

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, 1472 + ... + 57980.

It is an arithmetic number, because the mean of its divisors is an integer number (160205850).

Almost surely, 2^1679786534 is an apocalyptic number.

1679786534 is a deficient number, since it is larger than the sum of its proper divisors (883507066).

1679786534 is a wasteful number, since it uses less digits than its factorization.

1679786534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56767.

The product of its digits is 7620480, while the sum is 56.

The square root of 1679786534 is about 40985.1989625523. The cubic root of 1679786534 is about 1188.7340382118.

The spelling of 1679786534 in words is "one billion, six hundred seventy-nine million, seven hundred eighty-six thousand, five hundred thirty-four".