33481493 has 4 divisors (see below), whose sum is σ = 33500748. Its totient is φ = 33462240.

The previous prime is 33481471. The next prime is 33481499. The reversal of 33481493 is 39418433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39418433 = 109 ⋅361637.

It can be written as a sum of positive squares in 2 ways, for example, as 15984004 + 17497489 = 3998^2 + 4183^2 .

It is a cyclic number.

It is not a de Polignac number, because 33481493 - 2⁶ = 33481429 is a prime.

It is a super-2 number, since 2×33481493² = 2242020747018098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33481499) 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, 6728 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (8375187).

Almost surely, 2^33481493 is an apocalyptic number.

It is an amenable number.

33481493 is a deficient number, since it is larger than the sum of its proper divisors (19255).

33481493 is a wasteful number, since it uses less digits than its factorization.

33481493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19254.

The product of its digits is 31104, while the sum is 35.

The square root of 33481493 is about 5786.3194692309. The cubic root of 33481493 is about 322.3059121014.

The spelling of 33481493 in words is "thirty-three million, four hundred eighty-one thousand, four hundred ninety-three".