1666234100 has 18 divisors (see below), whose sum is σ = 3615728214. Its totient is φ = 666493600.

The previous prime is 1666234091. The next prime is 1666234117. The reversal of 1666234100 is 14326661.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 152868496 + 1513365604 = 12364^2 + 38902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8331071 + ... + 8331270.

Almost surely, 2^1666234100 is an apocalyptic number.

1666234100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1666234100 is an abundant number, since it is smaller than the sum of its proper divisors (1949494114).

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

1666234100 is a wasteful number, since it uses less digits than its factorization.

1666234100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16662355 (or 16662348 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1666234100 is about 40819.5308645261. The cubic root of 1666234100 is about 1185.5285197228.

The spelling of 1666234100 in words is "one billion, six hundred sixty-six million, two hundred thirty-four thousand, one hundred".