26141981 has 2 divisors, whose sum is σ = 26141982. Its totient is φ = 26141980.

The previous prime is 26141923. The next prime is 26141989. The reversal of 26141981 is 18914162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23921881 + 2220100 = 4891^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 26141981 - 2¹⁴ = 26125597 is a prime.

It is a super-2 number, since 2×26141981² = 1366806341208722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26141989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13070990 + 13070991.

It is an arithmetic number, because the mean of its divisors is an integer number (13070991).

Almost surely, 2^26141981 is an apocalyptic number.

It is an amenable number.

26141981 is a deficient number, since it is larger than the sum of its proper divisors (1).

26141981 is an equidigital number, since it uses as much as digits as its factorization.

26141981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 26141981 is about 5112.9229409409. The cubic root of 26141981 is about 296.7878822643.

The spelling of 26141981 in words is "twenty-six million, one hundred forty-one thousand, nine hundred eighty-one".