2111797955 has 8 divisors (see below), whose sum is σ = 2539024704. Its totient is φ = 1686193600.

The previous prime is 2111797913. The next prime is 2111797957. The reversal of 2111797955 is 5597971112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2111797955 - 2¹⁰ = 2111796931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111797957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402731 + ... + 407940.

It is an arithmetic number, because the mean of its divisors is an integer number (317378088).

Almost surely, 2^2111797955 is an apocalyptic number.

2111797955 is a deficient number, since it is larger than the sum of its proper divisors (427226749).

2111797955 is an equidigital number, since it uses as much as digits as its factorization.

2111797955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811197.

The product of its digits is 198450, while the sum is 47.

The square root of 2111797955 is about 45954.3028997286. The cubic root of 2111797955 is about 1282.9728174187.

The spelling of 2111797955 in words is "two billion, one hundred eleven million, seven hundred ninety-seven thousand, nine hundred fifty-five".