1678493550 has 24 divisors (see below), whose sum is σ = 4162664376. Its totient is φ = 447598240.

The previous prime is 1678493549. The next prime is 1678493627. The reversal of 1678493550 is 553948761.

1678493550 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1678493550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5594829 + ... + 5595128.

It is an arithmetic number, because the mean of its divisors is an integer number (173444349).

Almost surely, 2^1678493550 is an apocalyptic number.

1678493550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1678493550 is an abundant number, since it is smaller than the sum of its proper divisors (2484170826).

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

1678493550 is a wasteful number, since it uses less digits than its factorization.

1678493550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11189972 (or 11189967 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 1678493550 is about 40969.4221340746. The cubic root of 1678493550 is about 1188.4289580540.

The spelling of 1678493550 in words is "one billion, six hundred seventy-eight million, four hundred ninety-three thousand, five hundred fifty".