1678120308 has 48 divisors (see below), whose sum is σ = 4355856960. Its totient is φ = 558708192.

The previous prime is 1678120271. The next prime is 1678120321. The reversal of 1678120308 is 8030218761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86566 + ... + 104162.

It is an arithmetic number, because the mean of its divisors is an integer number (90747020).

Almost surely, 2^1678120308 is an apocalyptic number.

1678120308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1678120308 is an abundant number, since it is smaller than the sum of its proper divisors (2677736652).

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

1678120308 is a wasteful number, since it uses less digits than its factorization.

1678120308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18493 (or 18485 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1678120308 is about 40964.8667518887. The cubic root of 1678120308 is about 1188.3408622962.

The spelling of 1678120308 in words is "one billion, six hundred seventy-eight million, one hundred twenty thousand, three hundred eight".