145907918249 has 2 divisors, whose sum is σ = 145907918250. Its totient is φ = 145907918248.

The previous prime is 145907918089. The next prime is 145907918339. The reversal of 145907918249 is 942819709541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140880115600 + 5027802649 = 375340^2 + 70907^2 .

It is a cyclic number.

It is not a de Polignac number, because 145907918249 - 2²⁰ = 145906869673 is a prime.

It is not a weakly prime, because it can be changed into another prime (145907018249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72953959124 + 72953959125.

It is an arithmetic number, because the mean of its divisors is an integer number (72953959125).

Almost surely, 2^145907918249 is an apocalyptic number.

It is an amenable number.

145907918249 is a deficient number, since it is larger than the sum of its proper divisors (1).

145907918249 is an equidigital number, since it uses as much as digits as its factorization.

145907918249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 145907918249 in words is "one hundred forty-five billion, nine hundred seven million, nine hundred eighteen thousand, two hundred forty-nine".