11819408149 has 2 divisors, whose sum is σ = 11819408150. Its totient is φ = 11819408148.

The previous prime is 11819408141. The next prime is 11819408177. The reversal of 11819408149 is 94180491811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7976276100 + 3843132049 = 89310^2 + 61993^2 .

It is a cyclic number.

It is not a de Polignac number, because 11819408149 - 2³ = 11819408141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11819408099 and 11819408108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11819408141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909704074 + 5909704075.

It is an arithmetic number, because the mean of its divisors is an integer number (5909704075).

Almost surely, 2^11819408149 is an apocalyptic number.

It is an amenable number.

11819408149 is a deficient number, since it is larger than the sum of its proper divisors (1).

11819408149 is an equidigital number, since it uses as much as digits as its factorization.

11819408149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 46.

The spelling of 11819408149 in words is "eleven billion, eight hundred nineteen million, four hundred eight thousand, one hundred forty-nine".