1534133665 has 4 divisors (see below), whose sum is σ = 1840960404. Its totient is φ = 1227306928.

The previous prime is 1534133633. The next prime is 1534133719. The reversal of 1534133665 is 5663314351.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 246113344 + 1288020321 = 15688^2 + 35889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534133665 - 2⁵ = 1534133633 is a prime.

It is a super-2 number, since 2×1534133665² = 4707132204172664450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153413362 + ... + 153413371.

It is an arithmetic number, because the mean of its divisors is an integer number (460240101).

Almost surely, 2^1534133665 is an apocalyptic number.

It is an amenable number.

1534133665 is a deficient number, since it is larger than the sum of its proper divisors (306826739).

1534133665 is an equidigital number, since it uses as much as digits as its factorization.

1534133665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306826738.

The product of its digits is 97200, while the sum is 37.

The square root of 1534133665 is about 39168.0183951141. The cubic root of 1534133665 is about 1153.3321541989.

The spelling of 1534133665 in words is "one billion, five hundred thirty-four million, one hundred thirty-three thousand, six hundred sixty-five".