1665097049 has 8 divisors (see below), whose sum is σ = 2075965248. Its totient is φ = 1297478160.

The previous prime is 1665097037. The next prime is 1665097061. The reversal of 1665097049 is 9407905661.

It is an interprime number because it is at equal distance from previous prime (1665097037) and next prime (1665097061).

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

It is not a de Polignac number, because 1665097049 - 2⁴ = 1665097033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1665096994 and 1665097012.

It is not an unprimeable number, because it can be changed into a prime (1665097099) 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, 10812242 + ... + 10812395.

It is an arithmetic number, because the mean of its divisors is an integer number (259495656).

Almost surely, 2^1665097049 is an apocalyptic number.

It is an amenable number.

1665097049 is a deficient number, since it is larger than the sum of its proper divisors (410868199).

1665097049 is a wasteful number, since it uses less digits than its factorization.

1665097049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21624655.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1665097049 is about 40805.6007062756. The cubic root of 1665097049 is about 1185.2587870893.

The spelling of 1665097049 in words is "one billion, six hundred sixty-five million, ninety-seven thousand, forty-nine".