816343492 has 6 divisors (see below), whose sum is σ = 1428601118. Its totient is φ = 408171744.

The previous prime is 816343483. The next prime is 816343537. The reversal of 816343492 is 294343618.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 706177476 + 110166016 = 26574^2 + 10496^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102042933 + ... + 102042940.

Almost surely, 2^816343492 is an apocalyptic number.

It is an amenable number.

816343492 is a deficient number, since it is larger than the sum of its proper divisors (612257626).

816343492 is a wasteful number, since it uses less digits than its factorization.

816343492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204085877 (or 204085875 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 816343492 is about 28571.7253941725. The cubic root of 816343492 is about 934.5968471742.

The spelling of 816343492 in words is "eight hundred sixteen million, three hundred forty-three thousand, four hundred ninety-two".