145939837 has 2 divisors, whose sum is σ = 145939838. Its totient is φ = 145939836.

The previous prime is 145939831. The next prime is 145939873. The reversal of 145939837 is 738939541.

Together with next prime (145939873) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135629316 + 10310521 = 11646^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 145939837 - 2⁷ = 145939709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145939831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72969918 + 72969919.

It is an arithmetic number, because the mean of its divisors is an integer number (72969919).

Almost surely, 2^145939837 is an apocalyptic number.

It is an amenable number.

145939837 is a deficient number, since it is larger than the sum of its proper divisors (1).

145939837 is an equidigital number, since it uses as much as digits as its factorization.

145939837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 49.

The square root of 145939837 is about 12080.5561544161. The cubic root of 145939837 is about 526.4914049018.

The spelling of 145939837 in words is "one hundred forty-five million, nine hundred thirty-nine thousand, eight hundred thirty-seven".