2546140981 has 2 divisors, whose sum is σ = 2546140982. Its totient is φ = 2546140980.

The previous prime is 2546140969. The next prime is 2546141023. The reversal of 2546140981 is 1890416452.

2546140981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2281590756 + 264550225 = 47766^2 + 16265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2546140981 - 2²⁷ = 2411923253 is a prime.

It is a super-2 number, since 2×2546140981² = 12965667790255284722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2546143981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273070490 + 1273070491.

It is an arithmetic number, because the mean of its divisors is an integer number (1273070491).

Almost surely, 2^2546140981 is an apocalyptic number.

It is an amenable number.

2546140981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546140981 is an equidigital number, since it uses as much as digits as its factorization.

2546140981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 2546140981 is about 50459.3002428690. The cubic root of 2546140981 is about 1365.5076861182.

The spelling of 2546140981 in words is "two billion, five hundred forty-six million, one hundred forty thousand, nine hundred eighty-one".