802236491 has 4 divisors (see below), whose sum is σ = 916841712. Its totient is φ = 687631272.

The previous prime is 802236451. The next prime is 802236497. The reversal of 802236491 is 194632208.

802236491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-802236491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802236497) 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, 57302600 + ... + 57302613.

It is an arithmetic number, because the mean of its divisors is an integer number (229210428).

Almost surely, 2^802236491 is an apocalyptic number.

802236491 is a deficient number, since it is larger than the sum of its proper divisors (114605221).

802236491 is a wasteful number, since it uses less digits than its factorization.

802236491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114605220.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 802236491 is about 28323.7796030120. The cubic root of 802236491 is about 929.1820344736.

Adding to 802236491 its reverse (194632208), we get a palindrome (996868699).

The spelling of 802236491 in words is "eight hundred two million, two hundred thirty-six thousand, four hundred ninety-one".