1955419597 has 2 divisors, whose sum is σ = 1955419598. Its totient is φ = 1955419596.

The previous prime is 1955419567. The next prime is 1955419619. The reversal of 1955419597 is 7959145591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1819790281 + 135629316 = 42659^2 + 11646^2 .

It is a cyclic number.

It is not a de Polignac number, because 1955419597 - 2⁷ = 1955419469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1955419507) 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, 977709798 + 977709799.

It is an arithmetic number, because the mean of its divisors is an integer number (977709799).

Almost surely, 2^1955419597 is an apocalyptic number.

It is an amenable number.

1955419597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955419597 is an equidigital number, since it uses as much as digits as its factorization.

1955419597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2551500, while the sum is 55.

The square root of 1955419597 is about 44220.1266054271. The cubic root of 1955419597 is about 1250.4893224525.

The spelling of 1955419597 in words is "one billion, nine hundred fifty-five million, four hundred nineteen thousand, five hundred ninety-seven".