19672361 has 2 divisors, whose sum is σ = 19672362. Its totient is φ = 19672360.

The previous prime is 19672327. The next prime is 19672369. The reversal of 19672361 is 16327691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19669225 + 3136 = 4435^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 19672361 - 2¹⁸ = 19410217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19672369) 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, 9836180 + 9836181.

It is an arithmetic number, because the mean of its divisors is an integer number (9836181).

Almost surely, 2^19672361 is an apocalyptic number.

It is an amenable number.

19672361 is a deficient number, since it is larger than the sum of its proper divisors (1).

19672361 is an equidigital number, since it uses as much as digits as its factorization.

19672361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 19672361 is about 4435.3535372053. The cubic root of 19672361 is about 269.9513446848.

It can be divided in two parts, 196 and 72361, that multiplied together give a square (14182756 = 3766²).

The spelling of 19672361 in words is "nineteen million, six hundred seventy-two thousand, three hundred sixty-one".