1666498050 has 240 divisors, whose sum is σ = 5477060160. Its totient is φ = 367597440.

The previous prime is 1666498039. The next prime is 1666498063. The reversal of 1666498050 is 508946661.

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 = 1666497987 and 1666498005.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 821137 + ... + 823163.

It is an arithmetic number, because the mean of its divisors is an integer number (22821084).

Almost surely, 2^1666498050 is an apocalyptic number.

1666498050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666498050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2738530080).

1666498050 is an abundant number, since it is smaller than the sum of its proper divisors (3810562110).

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

1666498050 is a wasteful number, since it uses less digits than its factorization.

1666498050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087 (or 2073 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1666498050 is about 40822.7638701742. The cubic root of 1666498050 is about 1185.5911167154.

The spelling of 1666498050 in words is "one billion, six hundred sixty-six million, four hundred ninety-eight thousand, fifty".