1666754746 has 16 divisors (see below), whose sum is σ = 2655014400. Its totient is φ = 782526528.

The previous prime is 1666754737. The next prime is 1666754753. The reversal of 1666754746 is 6474576661.

It is a junction number, because it is equal to n+sod(n) for n = 1666754693 and 1666754702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189786 + ... + 198373.

It is an arithmetic number, because the mean of its divisors is an integer number (165938400).

Almost surely, 2^1666754746 is an apocalyptic number.

1666754746 is a deficient number, since it is larger than the sum of its proper divisors (988259654).

1666754746 is a wasteful number, since it uses less digits than its factorization.

1666754746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388293.

The product of its digits is 5080320, while the sum is 52.

The square root of 1666754746 is about 40825.9077792521. The cubic root of 1666754746 is about 1185.6519870482.

The spelling of 1666754746 in words is "one billion, six hundred sixty-six million, seven hundred fifty-four thousand, seven hundred forty-six".