145137938389 has 2 divisors, whose sum is σ = 145137938390. Its totient is φ = 145137938388.

The previous prime is 145137938383. The next prime is 145137938483. The reversal of 145137938389 is 983839731541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104420752164 + 40717186225 = 323142^2 + 201785^2 .

It is a cyclic number.

It is not a de Polignac number, because 145137938389 - 2¹⁵ = 145137905621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145137938383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72568969194 + 72568969195.

It is an arithmetic number, because the mean of its divisors is an integer number (72568969195).

Almost surely, 2^145137938389 is an apocalyptic number.

It is an amenable number.

145137938389 is a deficient number, since it is larger than the sum of its proper divisors (1).

145137938389 is an equidigital number, since it uses as much as digits as its factorization.

145137938389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 61.

The spelling of 145137938389 in words is "one hundred forty-five billion, one hundred thirty-seven million, nine hundred thirty-eight thousand, three hundred eighty-nine".