1534365666 has 56 divisors (see below), whose sum is σ = 3524321664. Its totient is φ = 500550840.

The previous prime is 1534365661. The next prime is 1534365667. The reversal of 1534365666 is 6665634351.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1534365661) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 57331 + ... + 79721.

Almost surely, 2^1534365666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1534365666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1762160832).

1534365666 is an abundant number, since it is smaller than the sum of its proper divisors (1989955998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1534365666 is an equidigital number, since it uses as much as digits as its factorization.

1534365666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22458 (or 22443 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 1534365666 is about 39170.9798958362. The cubic root of 1534365666 is about 1153.3902892303.

The spelling of 1534365666 in words is "one billion, five hundred thirty-four million, three hundred sixty-five thousand, six hundred sixty-six".