1666000376 has 16 divisors (see below), whose sum is σ = 3127921440. Its totient is φ = 831888000.

The previous prime is 1666000361. The next prime is 1666000403. The reversal of 1666000376 is 6730006661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132641 + ... + 144656.

It is an arithmetic number, because the mean of its divisors is an integer number (195495090).

Almost surely, 2^1666000376 is an apocalyptic number.

It is an amenable number.

1666000376 is a deficient number, since it is larger than the sum of its proper divisors (1461921064).

1666000376 is a wasteful number, since it uses less digits than its factorization.

1666000376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278054 (or 278050 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1666000376 is about 40816.6678698788. The cubic root of 1666000376 is about 1185.4730854505.

The spelling of 1666000376 in words is "one billion, six hundred sixty-six million, three hundred seventy-six", and thus it is an aban number.