145538393 has 32 divisors (see below), whose sum is σ = 196439040. Its totient is φ = 104132160.

The previous prime is 145538389. The next prime is 145538401. The reversal of 145538393 is 393835541.

It is a happy number.

It is not a de Polignac number, because 145538393 - 2² = 145538389 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 145538393.

It is not an unprimeable number, because it can be changed into a prime (145538593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347138 + ... + 347556.

It is an arithmetic number, because the mean of its divisors is an integer number (6138720).

Almost surely, 2^145538393 is an apocalyptic number.

145538393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145538393 is a deficient number, since it is larger than the sum of its proper divisors (50900647).

145538393 is a wasteful number, since it uses less digits than its factorization.

145538393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its digits is 194400, while the sum is 41.

The square root of 145538393 is about 12063.9294178970. The cubic root of 145538393 is about 526.0082128477.

The spelling of 145538393 in words is "one hundred forty-five million, five hundred thirty-eight thousand, three hundred ninety-three".