19773097 has 2 divisors, whose sum is σ = 19773098. Its totient is φ = 19773096.

The previous prime is 19773067. The next prime is 19773119. The reversal of 19773097 is 79037791.

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., 11182336 + 8590761 = 3344^2 + 2931^2 .

It is a cyclic number.

It is not a de Polignac number, because 19773097 - 2¹¹ = 19771049 is a prime.

It is not a weakly prime, because it can be changed into another prime (19773037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9886548 + 9886549.

It is an arithmetic number, because the mean of its divisors is an integer number (9886549).

Almost surely, 2^19773097 is an apocalyptic number.

It is an amenable number.

19773097 is a deficient number, since it is larger than the sum of its proper divisors (1).

19773097 is an equidigital number, since it uses as much as digits as its factorization.

19773097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 19773097 is about 4446.6950648768. The cubic root of 19773097 is about 270.4113391791.

The spelling of 19773097 in words is "nineteen million, seven hundred seventy-three thousand, ninety-seven".