536188993 has 4 divisors (see below), whose sum is σ = 567729540. Its totient is φ = 504648448.

The previous prime is 536188981. The next prime is 536188999. The reversal of 536188993 is 399881635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399881635 = 5 ⋅79976327.

It can be written as a sum of positive squares in 2 ways, for example, as 409333824 + 126855169 = 20232^2 + 11263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536188993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 536188993.

It is not an unprimeable number, because it can be changed into a prime (536188999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15770248 + ... + 15770281.

It is an arithmetic number, because the mean of its divisors is an integer number (141932385).

Almost surely, 2^536188993 is an apocalyptic number.

It is an amenable number.

536188993 is a deficient number, since it is larger than the sum of its proper divisors (31540547).

536188993 is a wasteful number, since it uses less digits than its factorization.

536188993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31540546.

The product of its digits is 1399680, while the sum is 52.

The square root of 536188993 is about 23155.7550729835. The cubic root of 536188993 is about 812.4050820243.

The spelling of 536188993 in words is "five hundred thirty-six million, one hundred eighty-eight thousand, nine hundred ninety-three".