816349494 has 16 divisors (see below), whose sum is σ = 1634445360. Its totient is φ = 271825440.

The previous prime is 816349493. The next prime is 816349549. The reversal of 816349494 is 494943618.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816349493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66649 + ... + 77940.

It is an arithmetic number, because the mean of its divisors is an integer number (102152835).

Almost surely, 2^816349494 is an apocalyptic number.

816349494 is an abundant number, since it is smaller than the sum of its proper divisors (818095866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816349494 is a wasteful number, since it uses less digits than its factorization.

816349494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145535.

The product of its digits is 746496, while the sum is 48.

The square root of 816349494 is about 28571.8304278882. The cubic root of 816349494 is about 934.5991376466.

The spelling of 816349494 in words is "eight hundred sixteen million, three hundred forty-nine thousand, four hundred ninety-four".