19401334852 has 6 divisors (see below), whose sum is σ = 33952335998. Its totient is φ = 9700667424.

The previous prime is 19401334829. The next prime is 19401334879. The reversal of 19401334852 is 25843310491.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16740219456 + 2661115396 = 129384^2 + 51586^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2425166853 + ... + 2425166860.

Almost surely, 2^19401334852 is an apocalyptic number.

It is an amenable number.

19401334852 is a deficient number, since it is larger than the sum of its proper divisors (14551001146).

19401334852 is a wasteful number, since it uses less digits than its factorization.

19401334852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850333717 (or 4850333715 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 19401334852 in words is "nineteen billion, four hundred one million, three hundred thirty-four thousand, eight hundred fifty-two".