33449220418 has 4 divisors (see below), whose sum is σ = 50173830630. Its totient is φ = 16724610208.

The previous prime is 33449220403. The next prime is 33449220433. The reversal of 33449220418 is 81402294433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81402294433 = 389 ⋅209260397.

It is an interprime number because it is at equal distance from previous prime (33449220403) and next prime (33449220433).

It can be written as a sum of positive squares in only one way, i.e., 21910808529 + 11538411889 = 148023^2 + 107417^2 .

It is a super-2 number, since 2×33449220418² (a number of 22 digits) contains 22 as substring.

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362305103 + ... + 8362305106.

Almost surely, 2^33449220418 is an apocalyptic number.

33449220418 is a deficient number, since it is larger than the sum of its proper divisors (16724610212).

33449220418 is a wasteful number, since it uses less digits than its factorization.

33449220418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16724610211.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 33449220418 in words is "thirty-three billion, four hundred forty-nine million, two hundred twenty thousand, four hundred eighteen".