1690166743 has 2 divisors, whose sum is σ = 1690166744. Its totient is φ = 1690166742.

The previous prime is 1690166689. The next prime is 1690166761. The reversal of 1690166743 is 3476610961.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1690166743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1690166743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690160743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845083371 + 845083372.

It is an arithmetic number, because the mean of its divisors is an integer number (845083372).

Almost surely, 2^1690166743 is an apocalyptic number.

1690166743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690166743 is an equidigital number, since it uses as much as digits as its factorization.

1690166743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1690166743 is about 41111.6375616443. The cubic root of 1690166743 is about 1191.1775982660.

The spelling of 1690166743 in words is "one billion, six hundred ninety million, one hundred sixty-six thousand, seven hundred forty-three".