19312438363444 has 6 divisors (see below), whose sum is σ = 33796767136034. Its totient is φ = 9656219181720.

The previous prime is 19312438363409. The next prime is 19312438363457. The reversal of 19312438363444 is 44436383421391.

It can be written as a sum of positive squares in only one way, i.e., 13953676353444 + 5358762010000 = 3735462^2 + 2314900^2 .

It is a super-2 number, since 2×19312438363444² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2414054795427 + ... + 2414054795434.

Almost surely, 2^{19312438363444} is an apocalyptic number.

It is an amenable number.

19312438363444 is a deficient number, since it is larger than the sum of its proper divisors (14484328772590).

19312438363444 is a wasteful number, since it uses less digits than its factorization.

19312438363444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828109590865 (or 4828109590863 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 55.

The spelling of 19312438363444 in words is "nineteen trillion, three hundred twelve billion, four hundred thirty-eight million, three hundred sixty-three thousand, four hundred forty-four".