254189862139 has 2 divisors, whose sum is σ = 254189862140. Its totient is φ = 254189862138.

The previous prime is 254189862077. The next prime is 254189862187. The reversal of 254189862139 is 931268981452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254189862139 - 2⁷ = 254189862011 is a prime.

It is a super-2 number, since 2×254189862139² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (254189869139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127094931069 + 127094931070.

It is an arithmetic number, because the mean of its divisors is an integer number (127094931070).

Almost surely, 2^254189862139 is an apocalyptic number.

254189862139 is a deficient number, since it is larger than the sum of its proper divisors (1).

254189862139 is an equidigital number, since it uses as much as digits as its factorization.

254189862139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 58.

The spelling of 254189862139 in words is "two hundred fifty-four billion, one hundred eighty-nine million, eight hundred sixty-two thousand, one hundred thirty-nine".