1690343813867 has 16 divisors (see below), whose sum is σ = 1807589302272. Its totient is φ = 1575085077120.

The previous prime is 1690343813819. The next prime is 1690343813897. The reversal of 1690343813867 is 7683183430961.

It is not a de Polignac number, because 1690343813867 - 2²⁰ = 1690342765291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1690343813897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7258838 + ... + 7488084.

It is an arithmetic number, because the mean of its divisors is an integer number (112974331392).

Almost surely, 2^{1690343813867} is an apocalyptic number.

1690343813867 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1690343813867 is a deficient number, since it is larger than the sum of its proper divisors (117245488405).

1690343813867 is a wasteful number, since it uses less digits than its factorization.

1690343813867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233578.

The product of its (nonzero) digits is 15676416, while the sum is 59.

The spelling of 1690343813867 in words is "one trillion, six hundred ninety billion, three hundred forty-three million, eight hundred thirteen thousand, eight hundred sixty-seven".