11934921437 has 2 divisors, whose sum is σ = 11934921438. Its totient is φ = 11934921436.

The previous prime is 11934921413. The next prime is 11934921463. The reversal of 11934921437 is 73412943911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10878281401 + 1056640036 = 104299^2 + 32506^2 .

It is a cyclic number.

It is not a de Polignac number, because 11934921437 - 2²⁴ = 11918144221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11934921637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5967460718 + 5967460719.

It is an arithmetic number, because the mean of its divisors is an integer number (5967460719).

Almost surely, 2^11934921437 is an apocalyptic number.

It is an amenable number.

11934921437 is a deficient number, since it is larger than the sum of its proper divisors (1).

11934921437 is an equidigital number, since it uses as much as digits as its factorization.

11934921437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The spelling of 11934921437 in words is "eleven billion, nine hundred thirty-four million, nine hundred twenty-one thousand, four hundred thirty-seven".