1945552943 has 2 divisors, whose sum is σ = 1945552944. Its totient is φ = 1945552942.

The previous prime is 1945552933. The next prime is 1945552967. The reversal of 1945552943 is 3492555491.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1945552943 is a prime.

It is a super-2 number, since 2×1945552943² = 7570352508031922498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945552933) 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, 972776471 + 972776472.

It is an arithmetic number, because the mean of its divisors is an integer number (972776472).

Almost surely, 2^1945552943 is an apocalyptic number.

1945552943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945552943 is an equidigital number, since it uses as much as digits as its factorization.

1945552943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 47.

The square root of 1945552943 is about 44108.4225857149. The cubic root of 1945552943 is about 1248.3825357904.

The spelling of 1945552943 in words is "one billion, nine hundred forty-five million, five hundred fifty-two thousand, nine hundred forty-three".