19310149 has 2 divisors, whose sum is σ = 19310150. Its totient is φ = 19310148.

The previous prime is 19310129. The next prime is 19310171. The reversal of 19310149 is 94101391.

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., 18122049 + 1188100 = 4257^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 19310149 - 2¹¹ = 19308101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19310119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9655074 + 9655075.

It is an arithmetic number, because the mean of its divisors is an integer number (9655075).

Almost surely, 2^19310149 is an apocalyptic number.

It is an amenable number.

19310149 is a deficient number, since it is larger than the sum of its proper divisors (1).

19310149 is an equidigital number, since it uses as much as digits as its factorization.

19310149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 19310149 is about 4394.3314622363. The cubic root of 19310149 is about 268.2842689849.

The spelling of 19310149 in words is "nineteen million, three hundred ten thousand, one hundred forty-nine".