669141019 has 2 divisors, whose sum is σ = 669141020. Its totient is φ = 669141018.

The previous prime is 669140999. The next prime is 669141023. The reversal of 669141019 is 910141966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669141019 - 2¹¹ = 669138971 is a prime.

It is a super-2 number, since 2×669141019² = 895499406616716722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (669141089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334570509 + 334570510.

It is an arithmetic number, because the mean of its divisors is an integer number (334570510).

Almost surely, 2^669141019 is an apocalyptic number.

669141019 is a deficient number, since it is larger than the sum of its proper divisors (1).

669141019 is an equidigital number, since it uses as much as digits as its factorization.

669141019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 669141019 is about 25867.7602238771. The cubic root of 669141019 is about 874.6599033107.

The spelling of 669141019 in words is "six hundred sixty-nine million, one hundred forty-one thousand, nineteen".