1955352961 has 4 divisors (see below), whose sum is σ = 1982138692. Its totient is φ = 1928567232.

The previous prime is 1955352941. The next prime is 1955352967. The reversal of 1955352961 is 1692535591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1692535591 = 2269 ⋅745939.

It can be written as a sum of positive squares in 2 ways, for example, as 741527361 + 1213825600 = 27231^2 + 34840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1955352961 - 2¹⁵ = 1955320193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1955352967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13392756 + ... + 13392901.

It is an arithmetic number, because the mean of its divisors is an integer number (495534673).

Almost surely, 2^1955352961 is an apocalyptic number.

It is an amenable number.

1955352961 is a deficient number, since it is larger than the sum of its proper divisors (26785731).

1955352961 is an equidigital number, since it uses as much as digits as its factorization.

1955352961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26785730.

The product of its digits is 364500, while the sum is 46.

The square root of 1955352961 is about 44219.3731411923. The cubic root of 1955352961 is about 1250.4751177343.

The spelling of 1955352961 in words is "one billion, nine hundred fifty-five million, three hundred fifty-two thousand, nine hundred sixty-one".