1961416859 has 2 divisors, whose sum is σ = 1961416860. Its totient is φ = 1961416858.

The previous prime is 1961416843. The next prime is 1961416883. The reversal of 1961416859 is 9586141691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1961416859 - 2⁴ = 1961416843 is a prime.

It is a super-3 number, since 3×1961416859³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1961416889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980708429 + 980708430.

It is an arithmetic number, because the mean of its divisors is an integer number (980708430).

Almost surely, 2^1961416859 is an apocalyptic number.

1961416859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961416859 is an equidigital number, since it uses as much as digits as its factorization.

1961416859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 50.

The square root of 1961416859 is about 44287.8861428269. The cubic root of 1961416859 is about 1251.7664325171.

The spelling of 1961416859 in words is "one billion, nine hundred sixty-one million, four hundred sixteen thousand, eight hundred fifty-nine".