149491745441 has 2 divisors, whose sum is σ = 149491745442. Its totient is φ = 149491745440.

The previous prime is 149491745401. The next prime is 149491745443. The reversal of 149491745441 is 144547194941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79465354816 + 70026390625 = 281896^2 + 264625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149491745441 is a prime.

Together with 149491745443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149491745443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74745872720 + 74745872721.

It is an arithmetic number, because the mean of its divisors is an integer number (74745872721).

Almost surely, 2^149491745441 is an apocalyptic number.

It is an amenable number.

149491745441 is a deficient number, since it is larger than the sum of its proper divisors (1).

149491745441 is an equidigital number, since it uses as much as digits as its factorization.

149491745441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The spelling of 149491745441 in words is "one hundred forty-nine billion, four hundred ninety-one million, seven hundred forty-five thousand, four hundred forty-one".