1533138066 has 24 divisors (see below), whose sum is σ = 3322520604. Its totient is φ = 510935040.

The previous prime is 1533138017. The next prime is 1533138109. The reversal of 1533138066 is 6608313351.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1327072041 + 206066025 = 36429^2 + 14355^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1533138066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150610 + ... + 160466.

Almost surely, 2^1533138066 is an apocalyptic number.

1533138066 is an abundant number, since it is smaller than the sum of its proper divisors (1789382538).

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

1533138066 is a wasteful number, since it uses less digits than its factorization.

1533138066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18506 (or 18503 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1533138066 is about 39155.3069966256. The cubic root of 1533138066 is about 1153.0826094889.

The spelling of 1533138066 in words is "one billion, five hundred thirty-three million, one hundred thirty-eight thousand, sixty-six".