19862556244 has 6 divisors (see below), whose sum is σ = 34759473434. Its totient is φ = 9931278120.

The previous prime is 19862556239. The next prime is 19862556253. The reversal of 19862556244 is 44265526891.

It can be written as a sum of positive squares in only one way, i.e., 16444984644 + 3417571600 = 128238^2 + 58460^2 .

It is a super-2 number, since 2×19862556244² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19862556191 and 19862556200.

It is a congruent number.

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, 2482819527 + ... + 2482819534.

Almost surely, 2^19862556244 is an apocalyptic number.

It is an amenable number.

19862556244 is a deficient number, since it is larger than the sum of its proper divisors (14896917190).

19862556244 is a wasteful number, since it uses less digits than its factorization.

19862556244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4965639065 (or 4965639063 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 52.

The spelling of 19862556244 in words is "nineteen billion, eight hundred sixty-two million, five hundred fifty-six thousand, two hundred forty-four".