1678323864 has 64 divisors (see below), whose sum is σ = 4885712640. Its totient is φ = 470471040.

The previous prime is 1678323863. The next prime is 1678323883. The reversal of 1678323864 is 4683238761.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678323863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85342 + ... + 103149.

It is an arithmetic number, because the mean of its divisors is an integer number (76339260).

Almost surely, 2^1678323864 is an apocalyptic number.

1678323864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1678323864 is an abundant number, since it is smaller than the sum of its proper divisors (3207388776).

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

1678323864 is a wasteful number, since it uses less digits than its factorization.

1678323864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188560 (or 188556 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 1678323864 is about 40967.3511957998. The cubic root of 1678323864 is about 1188.3889089373.

The spelling of 1678323864 in words is "one billion, six hundred seventy-eight million, three hundred twenty-three thousand, eight hundred sixty-four".