1690252799 has 2 divisors, whose sum is σ = 1690252800. Its totient is φ = 1690252798.

The previous prime is 1690252793. The next prime is 1690252801. The reversal of 1690252799 is 9972520961.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1690252799 - 2²⁸ = 1421817343 is a prime.

Together with 1690252801, 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 (1690252793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845126399 + 845126400.

It is an arithmetic number, because the mean of its divisors is an integer number (845126400).

Almost surely, 2^1690252799 is an apocalyptic number.

1690252799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690252799 is an equidigital number, since it uses as much as digits as its factorization.

1690252799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 1690252799 is about 41112.6841619469. The cubic root of 1690252799 is about 1191.1978144646.

The spelling of 1690252799 in words is "one billion, six hundred ninety million, two hundred fifty-two thousand, seven hundred ninety-nine".