1666926950 has 48 divisors (see below), whose sum is σ = 3363534720. Its totient is φ = 610955520.

The previous prime is 1666926917. The next prime is 1666926991. The reversal of 1666926950 is 596296661.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79691 + ... + 98409.

It is an arithmetic number, because the mean of its divisors is an integer number (70073640).

Almost surely, 2^1666926950 is an apocalyptic number.

1666926950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666926950 is an abundant number, since it is smaller than the sum of its proper divisors (1696607770).

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

1666926950 is a wasteful number, since it uses less digits than its factorization.

1666926950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18881 (or 18876 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 1666926950 is about 40828.0167287122. The cubic root of 1666926950 is about 1185.6928182871.

The spelling of 1666926950 in words is "one billion, six hundred sixty-six million, nine hundred twenty-six thousand, nine hundred fifty".