1955495539 has 2 divisors, whose sum is σ = 1955495540. Its totient is φ = 1955495538.

The previous prime is 1955495471. The next prime is 1955495551. The reversal of 1955495539 is 9355945591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1955495539 - 2⁷ = 1955495411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1955495539.

It is not a weakly prime, because it can be changed into another prime (1955493539) 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, 977747769 + 977747770.

It is an arithmetic number, because the mean of its divisors is an integer number (977747770).

Almost surely, 2^1955495539 is an apocalyptic number.

1955495539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955495539 is an equidigital number, since it uses as much as digits as its factorization.

1955495539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5467500, while the sum is 55.

The square root of 1955495539 is about 44220.9852784851. The cubic root of 1955495539 is about 1250.5055105264.

The spelling of 1955495539 in words is "one billion, nine hundred fifty-five million, four hundred ninety-five thousand, five hundred thirty-nine".