19522949 has 2 divisors, whose sum is σ = 19522950. Its totient is φ = 19522948.

The previous prime is 19522933. The next prime is 19522957. The reversal of 19522949 is 94922591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19518724 + 4225 = 4418^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 19522949 - 2⁴ = 19522933 is a prime.

It is a super-2 number, since 2×19522949² = 762291075313202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19522549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9761474 + 9761475.

It is an arithmetic number, because the mean of its divisors is an integer number (9761475).

Almost surely, 2^19522949 is an apocalyptic number.

It is an amenable number.

19522949 is a deficient number, since it is larger than the sum of its proper divisors (1).

19522949 is an equidigital number, since it uses as much as digits as its factorization.

19522949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 19522949 is about 4418.4781316648. The cubic root of 19522949 is about 269.2661783946.

The spelling of 19522949 in words is "nineteen million, five hundred twenty-two thousand, nine hundred forty-nine".