1665112351 has 8 divisors (see below), whose sum is σ = 1903233024. Its totient is φ = 1427053560.

The previous prime is 1665112333. The next prime is 1665112373. The reversal of 1665112351 is 1532115661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1665112351 - 2⁷ = 1665112223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665112321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91806 + ... + 108436.

It is an arithmetic number, because the mean of its divisors is an integer number (237904128).

Almost surely, 2^1665112351 is an apocalyptic number.

1665112351 is a deficient number, since it is larger than the sum of its proper divisors (238120673).

1665112351 is a wasteful number, since it uses less digits than its factorization.

1665112351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30941.

The product of its digits is 5400, while the sum is 31.

The square root of 1665112351 is about 40805.7882046163. The cubic root of 1665112351 is about 1185.2624178636.

The spelling of 1665112351 in words is "one billion, six hundred sixty-five million, one hundred twelve thousand, three hundred fifty-one".