2291666669 has 16 divisors (see below), whose sum is σ = 2435042736. Its totient is φ = 2153664000.

The previous prime is 2291666659. The next prime is 2291666693. The reversal of 2291666669 is 9666661922.

It can be written as a sum of positive squares in 8 ways, for example, as 27144100 + 2264522569 = 5210^2 + 47587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291666669 is a prime.

It is a super-2 number, since 2×2291666669² = 10503472243611111122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2291666669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291666609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145739 + ... + 160695.

It is an arithmetic number, because the mean of its divisors is an integer number (152190171).

Almost surely, 2^2291666669 is an apocalyptic number.

It is an amenable number.

2291666669 is a deficient number, since it is larger than the sum of its proper divisors (143376067).

2291666669 is a wasteful number, since it uses less digits than its factorization.

2291666669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15136.

The product of its digits is 2519424, while the sum is 53.

The square root of 2291666669 is about 47871.3554121878. The cubic root of 2291666669 is about 1318.4099826917.

The spelling of 2291666669 in words is "two billion, two hundred ninety-one million, six hundred sixty-six thousand, six hundred sixty-nine".