2354888981 has 2 divisors, whose sum is σ = 2354888982. Its totient is φ = 2354888980.

The previous prime is 2354888953. The next prime is 2354888983. The reversal of 2354888981 is 1898884532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2263380625 + 91508356 = 47575^2 + 9566^2 .

It is a cyclic number.

It is not a de Polignac number, because 2354888981 - 2²² = 2350694677 is a prime.

It is a super-2 number, since 2×2354888981² = 11091004225670436722, which contains 22 as substring.

Together with 2354888983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2354888983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177444490 + 1177444491.

It is an arithmetic number, because the mean of its divisors is an integer number (1177444491).

Almost surely, 2^2354888981 is an apocalyptic number.

It is an amenable number.

2354888981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2354888981 is an equidigital number, since it uses as much as digits as its factorization.

2354888981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4423680, while the sum is 56.

The square root of 2354888981 is about 48527.1983633920. The cubic root of 2354888981 is about 1330.4242302821.

The spelling of 2354888981 in words is "two billion, three hundred fifty-four million, eight hundred eighty-eight thousand, nine hundred eighty-one".