1969090867 has 2 divisors, whose sum is σ = 1969090868. Its totient is φ = 1969090866.

The previous prime is 1969090813. The next prime is 1969090951. The reversal of 1969090867 is 7680909691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1969090867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1969090267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984545433 + 984545434.

It is an arithmetic number, because the mean of its divisors is an integer number (984545434).

Almost surely, 2^1969090867 is an apocalyptic number.

1969090867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969090867 is an equidigital number, since it uses as much as digits as its factorization.

1969090867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 1969090867 is about 44374.4393429371. The cubic root of 1969090867 is about 1253.3968125967.

The spelling of 1969090867 in words is "one billion, nine hundred sixty-nine million, ninety thousand, eight hundred sixty-seven".