2141354381 has 2 divisors, whose sum is σ = 2141354382. Its totient is φ = 2141354380.

The previous prime is 2141354297. The next prime is 2141354387. The reversal of 2141354381 is 1834531412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2019693481 + 121660900 = 44941^2 + 11030^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141354381 - 2²⁶ = 2074245517 is a prime.

It is a super-2 number, since 2×2141354381² = 9170797170055786322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141354387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070677190 + 1070677191.

It is an arithmetic number, because the mean of its divisors is an integer number (1070677191).

Almost surely, 2^2141354381 is an apocalyptic number.

It is an amenable number.

2141354381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141354381 is an equidigital number, since it uses as much as digits as its factorization.

2141354381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 2141354381 is about 46274.7704586419. The cubic root of 2141354381 is about 1288.9305442314.

Adding to 2141354381 its reverse (1834531412), we get a palindrome (3975885793).

The spelling of 2141354381 in words is "two billion, one hundred forty-one million, three hundred fifty-four thousand, three hundred eighty-one".