145593138 has 16 divisors (see below), whose sum is σ = 293410656. Its totient is φ = 48160320.

The previous prime is 145593127. The next prime is 145593157. The reversal of 145593138 is 831395541.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145593096 and 145593105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91831 + ... + 93402.

It is an arithmetic number, because the mean of its divisors is an integer number (18338166).

Almost surely, 2^145593138 is an apocalyptic number.

145593138 is an abundant number, since it is smaller than the sum of its proper divisors (147817518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145593138 is a wasteful number, since it uses less digits than its factorization.

145593138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185369.

The product of its digits is 64800, while the sum is 39.

The square root of 145593138 is about 12066.1981584922. The cubic root of 145593138 is about 526.0741581266.

The spelling of 145593138 in words is "one hundred forty-five million, five hundred ninety-three thousand, one hundred thirty-eight".