1946109443 has 2 divisors, whose sum is σ = 1946109444. Its totient is φ = 1946109442.

The previous prime is 1946109421. The next prime is 1946109449. The reversal of 1946109443 is 3449016491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1946109443 - 2⁶ = 1946109379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1946109443.

It is not a weakly prime, because it can be changed into another prime (1946109449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973054721 + 973054722.

It is an arithmetic number, because the mean of its divisors is an integer number (973054722).

Almost surely, 2^1946109443 is an apocalyptic number.

1946109443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946109443 is an equidigital number, since it uses as much as digits as its factorization.

1946109443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1946109443 is about 44114.7304536705. The cubic root of 1946109443 is about 1248.5015522813.

The spelling of 1946109443 in words is "one billion, nine hundred forty-six million, one hundred nine thousand, four hundred forty-three".