145709347349 has 2 divisors, whose sum is σ = 145709347350. Its totient is φ = 145709347348.

The previous prime is 145709347283. The next prime is 145709347379. The reversal of 145709347349 is 943743907541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142438308100 + 3271039249 = 377410^2 + 57193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145709347349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145709347294 and 145709347303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145709347379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72854673674 + 72854673675.

It is an arithmetic number, because the mean of its divisors is an integer number (72854673675).

Almost surely, 2^145709347349 is an apocalyptic number.

It is an amenable number.

145709347349 is a deficient number, since it is larger than the sum of its proper divisors (1).

145709347349 is an equidigital number, since it uses as much as digits as its factorization.

145709347349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 145709347349 in words is "one hundred forty-five billion, seven hundred nine million, three hundred forty-seven thousand, three hundred forty-nine".