1666667160 has 48 divisors (see below), whose sum is σ = 5416669440. Its totient is φ = 444444480.

The previous prime is 1666667153. The next prime is 1666667221. The reversal of 1666667160 is 617666661.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2314456 + ... + 2315175.

It is an arithmetic number, because the mean of its divisors is an integer number (112847280).

Almost surely, 2^1666667160 is an apocalyptic number.

1666667160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1666667160 is an abundant number, since it is smaller than the sum of its proper divisors (3750002280).

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

1666667160 is a wasteful number, since it uses less digits than its factorization.

1666667160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629648 (or 4629641 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 1666667160 is about 40824.8350884606. The cubic root of 1666667160 is about 1185.6312184789.

The spelling of 1666667160 in words is "one billion, six hundred sixty-six million, six hundred sixty-seven thousand, one hundred sixty".