533138994 has 24 divisors (see below), whose sum is σ = 1186355820. Its totient is φ = 172909728.

The previous prime is 533138959. The next prime is 533139007. The reversal of 533138994 is 499831335.

It can be written as a sum of positive squares in 2 ways, for example, as 482373369 + 50765625 = 21963^2 + 7125^2 .

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, 399589 + ... + 400920.

Almost surely, 2^533138994 is an apocalyptic number.

533138994 is an abundant number, since it is smaller than the sum of its proper divisors (653216826).

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

533138994 is a wasteful number, since it uses less digits than its factorization.

533138994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800554 (or 800551 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 533138994 is about 23089.8028142295. The cubic root of 533138994 is about 810.8617531865.

The spelling of 533138994 in words is "five hundred thirty-three million, one hundred thirty-eight thousand, nine hundred ninety-four".