1665283967 has 2 divisors, whose sum is σ = 1665283968. Its totient is φ = 1665283966.

The previous prime is 1665283891. The next prime is 1665283981. The reversal of 1665283967 is 7693825661.

It is a strong prime.

It is an emirp because it is prime and its reverse (7693825661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1665283967 - 2¹⁰ = 1665282943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1665283567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832641983 + 832641984.

It is an arithmetic number, because the mean of its divisors is an integer number (832641984).

Almost surely, 2^1665283967 is an apocalyptic number.

1665283967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1665283967 is an equidigital number, since it uses as much as digits as its factorization.

1665283967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The square root of 1665283967 is about 40807.8909893663. The cubic root of 1665283967 is about 1185.3031364388.

The spelling of 1665283967 in words is "one billion, six hundred sixty-five million, two hundred eighty-three thousand, nine hundred sixty-seven".