1964874678 has 16 divisors (see below), whose sum is σ = 4232037936. Its totient is φ = 604576800.

The previous prime is 1964874647. The next prime is 1964874689. The reversal of 1964874678 is 8764784691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12595273 + ... + 12595428.

It is an arithmetic number, because the mean of its divisors is an integer number (264502371).

Almost surely, 2^1964874678 is an apocalyptic number.

1964874678 is an abundant number, since it is smaller than the sum of its proper divisors (2267163258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1964874678 is a wasteful number, since it uses less digits than its factorization.

1964874678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25190719.

The product of its digits is 16257024, while the sum is 60.

The square root of 1964874678 is about 44326.9069302156. The cubic root of 1964874678 is about 1252.5015882785.

The spelling of 1964874678 in words is "one billion, nine hundred sixty-four million, eight hundred seventy-four thousand, six hundred seventy-eight".