1678085904 has 40 divisors (see below), whose sum is σ = 4729152672. Its totient is φ = 508510720.

The previous prime is 1678085897. The next prime is 1678085917. The reversal of 1678085904 is 4095808761.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588569 + ... + 1589624.

Almost surely, 2^1678085904 is an apocalyptic number.

It is an amenable number.

1678085904 is an abundant number, since it is smaller than the sum of its proper divisors (3051066768).

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

1678085904 is a wasteful number, since it uses less digits than its factorization.

1678085904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178215 (or 3178209 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 1678085904 is about 40964.4468289272. The cubic root of 1678085904 is about 1188.3327413134.

The spelling of 1678085904 in words is "one billion, six hundred seventy-eight million, eighty-five thousand, nine hundred four".