816134043 has 4 divisors (see below), whose sum is σ = 1088178728. Its totient is φ = 544089360.

The previous prime is 816134029. The next prime is 816134051. The reversal of 816134043 is 340431618.

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

It is not a de Polignac number, because 816134043 - 2¹⁸ = 815871899 is a prime.

It is a super-2 number, since 2×816134043² = 1332149552287051698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 816134043.

It is not an unprimeable number, because it can be changed into a prime (816134003) 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, 136022338 + ... + 136022343.

It is an arithmetic number, because the mean of its divisors is an integer number (272044682).

Almost surely, 2^816134043 is an apocalyptic number.

816134043 is a deficient number, since it is larger than the sum of its proper divisors (272044685).

816134043 is a wasteful number, since it uses less digits than its factorization.

816134043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272044684.

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

The square root of 816134043 is about 28568.0598396181. The cubic root of 816134043 is about 934.5169105950.

The spelling of 816134043 in words is "eight hundred sixteen million, one hundred thirty-four thousand, forty-three".