33985490438 has 4 divisors (see below), whose sum is σ = 50978235660. Its totient is φ = 16992745218.

The previous prime is 33985490419. The next prime is 33985490443. The reversal of 33985490438 is 83409458933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83409458933 = 47 ⋅1774669339.

It is a super-2 number, since 2×33985490438² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8496372608 + ... + 8496372611.

It is an arithmetic number, because the mean of its divisors is an integer number (12744558915).

Almost surely, 2^33985490438 is an apocalyptic number.

33985490438 is a deficient number, since it is larger than the sum of its proper divisors (16992745222).

33985490438 is a wasteful number, since it uses less digits than its factorization.

33985490438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16992745221.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 33985490438 in words is "thirty-three billion, nine hundred eighty-five million, four hundred ninety thousand, four hundred thirty-eight".