2355119981 has 2 divisors, whose sum is σ = 2355119982. Its totient is φ = 2355119980.

The previous prime is 2355119959. The next prime is 2355120011. The reversal of 2355119981 is 1899115532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1527637225 + 827482756 = 39085^2 + 28766^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355119981 - 2¹⁰ = 2355118957 is a prime.

It is a super-2 number, since 2×2355119981² = 11093180249810880722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2355119911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177559990 + 1177559991.

It is an arithmetic number, because the mean of its divisors is an integer number (1177559991).

Almost surely, 2^2355119981 is an apocalyptic number.

It is an amenable number.

2355119981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355119981 is an equidigital number, since it uses as much as digits as its factorization.

2355119981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 44.

The square root of 2355119981 is about 48529.5784135820. The cubic root of 2355119981 is about 1330.4677309809.

The spelling of 2355119981 in words is "two billion, three hundred fifty-five million, one hundred nineteen thousand, nine hundred eighty-one".