1665734492 has 12 divisors (see below), whose sum is σ = 2964443160. Its totient is φ = 818750736.

The previous prime is 1665734491. The next prime is 1665734507. The reversal of 1665734492 is 2944375661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665734491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3528863 + ... + 3529334.

It is an arithmetic number, because the mean of its divisors is an integer number (247036930).

Almost surely, 2^1665734492 is an apocalyptic number.

It is an amenable number.

1665734492 is a deficient number, since it is larger than the sum of its proper divisors (1298708668).

1665734492 is a wasteful number, since it uses less digits than its factorization.

1665734492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7058260 (or 7058258 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 1665734492 is about 40813.4106881549. The cubic root of 1665734492 is about 1185.4100172184.

The spelling of 1665734492 in words is "one billion, six hundred sixty-five million, seven hundred thirty-four thousand, four hundred ninety-two".