1924900661 has 2 divisors, whose sum is σ = 1924900662. Its totient is φ = 1924900660.

The previous prime is 1924900631. The next prime is 1924900669. The reversal of 1924900661 is 1660094291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1924576900 + 323761 = 43870^2 + 569^2 .

It is an emirp because it is prime and its reverse (1660094291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1924900661 - 2¹⁰ = 1924899637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1924900669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962450330 + 962450331.

It is an arithmetic number, because the mean of its divisors is an integer number (962450331).

Almost surely, 2^1924900661 is an apocalyptic number.

It is an amenable number.

1924900661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1924900661 is an equidigital number, since it uses as much as digits as its factorization.

1924900661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1924900661 is about 43873.6898493847. The cubic root of 1924900661 is about 1243.9495687571.

The spelling of 1924900661 in words is "one billion, nine hundred twenty-four million, nine hundred thousand, six hundred sixty-one".