1678294312 has 16 divisors (see below), whose sum is σ = 3150884340. Its totient is φ = 838058496.

The previous prime is 1678294297. The next prime is 1678294327. The reversal of 1678294312 is 2134928761.

It is an interprime number because it is at equal distance from previous prime (1678294297) and next prime (1678294327).

It can be written as a sum of positive squares in 2 ways, for example, as 1321613316 + 356680996 = 36354^2 + 18886^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129513 + ... + 141880.

Almost surely, 2^1678294312 is an apocalyptic number.

It is an amenable number.

1678294312 is a deficient number, since it is larger than the sum of its proper divisors (1472590028).

1678294312 is a wasteful number, since it uses less digits than its factorization.

1678294312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272172 (or 272168 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 1678294312 is about 40966.9905167563. The cubic root of 1678294312 is about 1188.3819338284.

The spelling of 1678294312 in words is "one billion, six hundred seventy-eight million, two hundred ninety-four thousand, three hundred twelve".