11837819281 has 2 divisors, whose sum is σ = 11837819282. Its totient is φ = 11837819280.

The previous prime is 11837819251. The next prime is 11837819327. The reversal of 11837819281 is 18291873811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7866803025 + 3971016256 = 88695^2 + 63016^2 .

It is a cyclic number.

It is not a de Polignac number, because 11837819281 - 2⁷ = 11837819153 is a prime.

It is a super-2 number, since 2×11837819281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11837819251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5918909640 + 5918909641.

It is an arithmetic number, because the mean of its divisors is an integer number (5918909641).

Almost surely, 2^11837819281 is an apocalyptic number.

It is an amenable number.

11837819281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11837819281 is an equidigital number, since it uses as much as digits as its factorization.

11837819281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 49.

The spelling of 11837819281 in words is "eleven billion, eight hundred thirty-seven million, eight hundred nineteen thousand, two hundred eighty-one".