162533389 has 4 divisors (see below), whose sum is σ = 166497660. Its totient is φ = 158569120.

The previous prime is 162533381. The next prime is 162533407. The reversal of 162533389 is 983335261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983335261 = 23 ⋅42753707.

It can be written as a sum of positive squares in 2 ways, for example, as 27741289 + 134792100 = 5267^2 + 11610^2 .

It is a cyclic number.

It is not a de Polignac number, because 162533389 - 2³ = 162533381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162533381) 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, 1982074 + ... + 1982155.

It is an arithmetic number, because the mean of its divisors is an integer number (41624415).

Almost surely, 2^162533389 is an apocalyptic number.

It is an amenable number.

162533389 is a deficient number, since it is larger than the sum of its proper divisors (3964271).

162533389 is an equidigital number, since it uses as much as digits as its factorization.

162533389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964270.

The product of its digits is 116640, while the sum is 40.

The square root of 162533389 is about 12748.8583410437. The cubic root of 162533389 is about 545.7338138602.

The spelling of 162533389 in words is "one hundred sixty-two million, five hundred thirty-three thousand, three hundred eighty-nine".