19852739272 has 8 divisors (see below), whose sum is σ = 37223886150. Its totient is φ = 9926369632.

The previous prime is 19852739261. The next prime is 19852739279. The reversal of 19852739272 is 27293725891.

It can be written as a sum of positive squares in only one way, i.e., 19603920196 + 248819076 = 140014^2 + 15774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×19852739272² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19852739279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1240796197 + ... + 1240796212.

Almost surely, 2^19852739272 is an apocalyptic number.

It is an amenable number.

19852739272 is a deficient number, since it is larger than the sum of its proper divisors (17371146878).

19852739272 is a wasteful number, since it uses less digits than its factorization.

19852739272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481592415 (or 2481592411 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The spelling of 19852739272 in words is "nineteen billion, eight hundred fifty-two million, seven hundred thirty-nine thousand, two hundred seventy-two".