1964986943 has 2 divisors, whose sum is σ = 1964986944. Its totient is φ = 1964986942.

The previous prime is 1964986913. The next prime is 1964986957. The reversal of 1964986943 is 3496894691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1964986943 - 2⁸ = 1964986687 is a prime.

It is a super-2 number, since 2×1964986943² = 7722347372320970498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964986913) 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, 982493471 + 982493472.

It is an arithmetic number, because the mean of its divisors is an integer number (982493472).

Almost surely, 2^1964986943 is an apocalyptic number.

1964986943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964986943 is an equidigital number, since it uses as much as digits as its factorization.

1964986943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 59.

The square root of 1964986943 is about 44328.1732423072. The cubic root of 1964986943 is about 1252.5254421175.

The spelling of 1964986943 in words is "one billion, nine hundred sixty-four million, nine hundred eighty-six thousand, nine hundred forty-three".