19823737156 has 6 divisors (see below), whose sum is σ = 34691540030. Its totient is φ = 9911868576.

The previous prime is 19823737093. The next prime is 19823737159. The reversal of 19823737156 is 65173732891.

It can be written as a sum of positive squares in only one way, i.e., 14288377156 + 5535360000 = 119534^2 + 74400^2 .

It is not an unprimeable number, because it can be changed into a prime (19823737159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2477967141 + ... + 2477967148.

Almost surely, 2^19823737156 is an apocalyptic number.

It is an amenable number.

19823737156 is a deficient number, since it is larger than the sum of its proper divisors (14867802874).

19823737156 is a wasteful number, since it uses less digits than its factorization.

19823737156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955934293 (or 4955934291 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 52.

The spelling of 19823737156 in words is "nineteen billion, eight hundred twenty-three million, seven hundred thirty-seven thousand, one hundred fifty-six".