81433803 has 8 divisors (see below), whose sum is σ = 118449216. Its totient is φ = 49353800.

The previous prime is 81433801. The next prime is 81433817. The reversal of 81433803 is 30833418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81433803 - 2¹ = 81433801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81433801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233813 + ... + 1233878.

It is an arithmetic number, because the mean of its divisors is an integer number (14806152).

Almost surely, 2^81433803 is an apocalyptic number.

81433803 is a deficient number, since it is larger than the sum of its proper divisors (37015413).

81433803 is a wasteful number, since it uses less digits than its factorization.

81433803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467705.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 81433803 is about 9024.0679851162. The cubic root of 81433803 is about 433.4459063872.

The spelling of 81433803 in words is "eighty-one million, four hundred thirty-three thousand, eight hundred three".