145645792949 has 2 divisors, whose sum is σ = 145645792950. Its totient is φ = 145645792948.

The previous prime is 145645792939. The next prime is 145645793039. The reversal of 145645792949 is 949297546541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94956422500 + 50689370449 = 308150^2 + 225143^2 .

It is a cyclic number.

It is not a de Polignac number, because 145645792949 - 2⁸ = 145645792693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145645792939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72822896474 + 72822896475.

It is an arithmetic number, because the mean of its divisors is an integer number (72822896475).

Almost surely, 2^145645792949 is an apocalyptic number.

It is an amenable number.

145645792949 is a deficient number, since it is larger than the sum of its proper divisors (1).

145645792949 is an equidigital number, since it uses as much as digits as its factorization.

145645792949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97977600, while the sum is 65.

The spelling of 145645792949 in words is "one hundred forty-five billion, six hundred forty-five million, seven hundred ninety-two thousand, nine hundred forty-nine".