1923687497 has 2 divisors, whose sum is σ = 1923687498. Its totient is φ = 1923687496.

The previous prime is 1923687449. The next prime is 1923687527. The reversal of 1923687497 is 7947863291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1730227216 + 193460281 = 41596^2 + 13909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1923687497 - 2¹⁰ = 1923686473 is a prime.

It is a super-2 number, since 2×1923687497² = 7401147172228250018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1923687407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961843748 + 961843749.

It is an arithmetic number, because the mean of its divisors is an integer number (961843749).

Almost surely, 2^1923687497 is an apocalyptic number.

It is an amenable number.

1923687497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923687497 is an equidigital number, since it uses as much as digits as its factorization.

1923687497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The square root of 1923687497 is about 43859.8620266868. The cubic root of 1923687497 is about 1243.6881817646.

The spelling of 1923687497 in words is "one billion, nine hundred twenty-three million, six hundred eighty-seven thousand, four hundred ninety-seven".