1699919423 has 2 divisors, whose sum is σ = 1699919424. Its totient is φ = 1699919422.

The previous prime is 1699919413. The next prime is 1699919449. The reversal of 1699919423 is 3249199961.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1699919423 - 2¹⁰ = 1699918399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1699919413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849959711 + 849959712.

It is an arithmetic number, because the mean of its divisors is an integer number (849959712).

Almost surely, 2^1699919423 is an apocalyptic number.

1699919423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1699919423 is an equidigital number, since it uses as much as digits as its factorization.

1699919423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 53.

The square root of 1699919423 is about 41230.0791049447. The cubic root of 1699919423 is about 1193.4643352970.

The spelling of 1699919423 in words is "one billion, six hundred ninety-nine million, nine hundred nineteen thousand, four hundred twenty-three".