83540818 has 4 divisors (see below), whose sum is σ = 125311230. Its totient is φ = 41770408.

The previous prime is 83540813. The next prime is 83540827. The reversal of 83540818 is 81804538.

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

It can be written as a sum of positive squares in only one way, i.e., 44315649 + 39225169 = 6657^2 + 6263^2 .

It is not an unprimeable number, because it can be changed into a prime (83540813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20885203 + ... + 20885206.

Almost surely, 2^83540818 is an apocalyptic number.

83540818 is a deficient number, since it is larger than the sum of its proper divisors (41770412).

83540818 is a wasteful number, since it uses less digits than its factorization.

83540818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41770411.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 83540818 is about 9140.0666299541. The cubic root of 83540818 is about 437.1524410264.

The spelling of 83540818 in words is "eighty-three million, five hundred forty thousand, eight hundred eighteen".