145326913 has 2 divisors, whose sum is σ = 145326914. Its totient is φ = 145326912.

The previous prime is 145326889. The next prime is 145326983. The reversal of 145326913 is 319623541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75637809 + 69689104 = 8697^2 + 8348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145326913 is a prime.

It is a super-2 number, since 2×145326913² = 42239823284219138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145326983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72663456 + 72663457.

It is an arithmetic number, because the mean of its divisors is an integer number (72663457).

Almost surely, 2^145326913 is an apocalyptic number.

It is an amenable number.

145326913 is a deficient number, since it is larger than the sum of its proper divisors (1).

145326913 is an equidigital number, since it uses as much as digits as its factorization.

145326913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 145326913 is about 12055.1612598090. The cubic root of 145326913 is about 525.7533107135.

The spelling of 145326913 in words is "one hundred forty-five million, three hundred twenty-six thousand, nine hundred thirteen".