1690097999 has 2 divisors, whose sum is σ = 1690098000. Its totient is φ = 1690097998.

The previous prime is 1690097963. The next prime is 1690098001. The reversal of 1690097999 is 9997900961.

It is a strong prime.

It is an emirp because it is prime and its reverse (9997900961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1690097999 - 2²⁴ = 1673320783 is a prime.

Together with 1690098001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690097909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845048999 + 845049000.

It is an arithmetic number, because the mean of its divisors is an integer number (845049000).

Almost surely, 2^1690097999 is an apocalyptic number.

1690097999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690097999 is an equidigital number, since it uses as much as digits as its factorization.

1690097999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2480058, while the sum is 59.

The square root of 1690097999 is about 41110.8014881734. The cubic root of 1690097999 is about 1191.1614484939.

The spelling of 1690097999 in words is "one billion, six hundred ninety million, ninety-seven thousand, nine hundred ninety-nine".