1678485650 has 96 divisors (see below), whose sum is σ = 3562004160. Its totient is φ = 584478720.

The previous prime is 1678485643. The next prime is 1678485661. The reversal of 1678485650 is 565848761.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 693242 + ... + 695658.

It is an arithmetic number, because the mean of its divisors is an integer number (37104210).

Almost surely, 2^1678485650 is an apocalyptic number.

1678485650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1678485650 is an abundant number, since it is smaller than the sum of its proper divisors (1883518510).

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

1678485650 is a wasteful number, since it uses less digits than its factorization.

1678485650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508 (or 2503 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The square root of 1678485650 is about 40969.3257205925. The cubic root of 1678485650 is about 1188.4270935639.

The spelling of 1678485650 in words is "one billion, six hundred seventy-eight million, four hundred eighty-five thousand, six hundred fifty".