1955108593 has 2 divisors, whose sum is σ = 1955108594. Its totient is φ = 1955108592.

The previous prime is 1955108581. The next prime is 1955108671. The reversal of 1955108593 is 3958015591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1305521424 + 649587169 = 36132^2 + 25487^2 .

It is an emirp because it is prime and its reverse (3958015591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1955108593 - 2²⁵ = 1921554161 is a prime.

It is a super-4 number, since 4×1955108593⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1955108513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977554296 + 977554297.

It is an arithmetic number, because the mean of its divisors is an integer number (977554297).

Almost surely, 2^1955108593 is an apocalyptic number.

It is an amenable number.

1955108593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955108593 is an equidigital number, since it uses as much as digits as its factorization.

1955108593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 46.

The square root of 1955108593 is about 44216.6099220644. The cubic root of 1955108593 is about 1250.4230233315.

The spelling of 1955108593 in words is "one billion, nine hundred fifty-five million, one hundred eight thousand, five hundred ninety-three".