10400819218 has 4 divisors (see below), whose sum is σ = 15601228830. Its totient is φ = 5200409608.

The previous prime is 10400819201. The next prime is 10400819239. The reversal of 10400819218 is 81291800401.

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., 8732341809 + 1668477409 = 93447^2 + 40847^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600204803 + ... + 2600204806.

Almost surely, 2^10400819218 is an apocalyptic number.

10400819218 is a deficient number, since it is larger than the sum of its proper divisors (5200409612).

10400819218 is an equidigital number, since it uses as much as digits as its factorization.

10400819218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200409611.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 10400819218 in words is "ten billion, four hundred million, eight hundred nineteen thousand, two hundred eighteen".