1955255197 has 24 divisors (see below), whose sum is σ = 2327312000. Its totient is φ = 1609046208.

The previous prime is 1955255179. The next prime is 1955255213. The reversal of 1955255197 is 7915525591.

It is not a de Polignac number, because 1955255197 - 2¹¹ = 1955253149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1955255197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955255117) 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 in 23 ways as a sum of consecutive naturals, for example, 1170679 + ... + 1172347.

Almost surely, 2^1955255197 is an apocalyptic number.

It is an amenable number.

1955255197 is a deficient number, since it is larger than the sum of its proper divisors (372056803).

1955255197 is a wasteful number, since it uses less digits than its factorization.

1955255197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933 (or 1904 counting only the distinct ones).

The product of its digits is 708750, while the sum is 49.

The square root of 1955255197 is about 44218.2676842954. The cubic root of 1955255197 is about 1250.4542769127.

The spelling of 1955255197 in words is "one billion, nine hundred fifty-five million, two hundred fifty-five thousand, one hundred ninety-seven".