1699070650369 has 4 divisors (see below), whose sum is σ = 1699719896644. Its totient is φ = 1698421404096.

The previous prime is 1699070650363. The next prime is 1699070650373. The reversal of 1699070650369 is 9630560709961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1081059267600 + 618011382769 = 1039740^2 + 786137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1699070650369 - 2³⁷ = 1561631696897 is a prime.

It is a super-2 number, since 2×1699070650369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1699070650363) 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 in 3 ways as a sum of consecutive naturals, for example, 324619212 + ... + 324624445.

It is an arithmetic number, because the mean of its divisors is an integer number (424929974161).

Almost surely, 2^{1699070650369} is an apocalyptic number.

It is an amenable number.

1699070650369 is a deficient number, since it is larger than the sum of its proper divisors (649246275).

1699070650369 is an equidigital number, since it uses as much as digits as its factorization.

1699070650369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649246274.

The product of its (nonzero) digits is 16533720, while the sum is 61.

The spelling of 1699070650369 in words is "one trillion, six hundred ninety-nine billion, seventy million, six hundred fifty thousand, three hundred sixty-nine".