1680619950 has 36 divisors (see below), whose sum is σ = 4515266808. Its totient is φ = 448165200.

The previous prime is 1680619931. The next prime is 1680619973. The reversal of 1680619950 is 599160861.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1680619896 and 1680619905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1866906 + ... + 1867805.

It is an arithmetic number, because the mean of its divisors is an integer number (125424078).

Almost surely, 2^1680619950 is an apocalyptic number.

1680619950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680619950 is an abundant number, since it is smaller than the sum of its proper divisors (2834646858).

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

1680619950 is a wasteful number, since it uses less digits than its factorization.

1680619950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734729 (or 3734721 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 1680619950 is about 40995.3649819098. The cubic root of 1680619950 is about 1188.9306001256.

The spelling of 1680619950 in words is "one billion, six hundred eighty million, six hundred nineteen thousand, nine hundred fifty".