203440410149 has 2 divisors, whose sum is σ = 203440410150. Its totient is φ = 203440410148.

The previous prime is 203440410127. The next prime is 203440410163. The reversal of 203440410149 is 941014044302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203349589249 + 90820900 = 450943^2 + 9530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203440410149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203440410049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101720205074 + 101720205075.

It is an arithmetic number, because the mean of its divisors is an integer number (101720205075).

Almost surely, 2^203440410149 is an apocalyptic number.

It is an amenable number.

203440410149 is a deficient number, since it is larger than the sum of its proper divisors (1).

203440410149 is an equidigital number, since it uses as much as digits as its factorization.

203440410149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 203440410149 in words is "two hundred three billion, four hundred forty million, four hundred ten thousand, one hundred forty-nine".