1955019355 has 4 divisors (see below), whose sum is σ = 2346023232. Its totient is φ = 1564015480.

The previous prime is 1955019337. The next prime is 1955019361. The reversal of 1955019355 is 5539105591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5539105591 = 35129 ⋅157679.

It is a de Polignac number, because none of the positive numbers 2^k-1955019355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 195501931 + ... + 195501940.

It is an arithmetic number, because the mean of its divisors is an integer number (586505808).

Almost surely, 2^1955019355 is an apocalyptic number.

1955019355 is a deficient number, since it is larger than the sum of its proper divisors (391003877).

1955019355 is an equidigital number, since it uses as much as digits as its factorization.

1955019355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391003876.

The product of its (nonzero) digits is 151875, while the sum is 43.

The square root of 1955019355 is about 44215.6008101213. The cubic root of 1955019355 is about 1250.4039984808.

The spelling of 1955019355 in words is "one billion, nine hundred fifty-five million, nineteen thousand, three hundred fifty-five".