145509038 has 4 divisors (see below), whose sum is σ = 218263560. Its totient is φ = 72754518.

The previous prime is 145509019. The next prime is 145509047. The reversal of 145509038 is 830905541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 830905541 = 1181 ⋅703561.

It is a junction number, because it is equal to n+sod(n) for n = 145508989 and 145509007.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 36377258 + ... + 36377261.

It is an arithmetic number, because the mean of its divisors is an integer number (54565890).

Almost surely, 2^145509038 is an apocalyptic number.

145509038 is a deficient number, since it is larger than the sum of its proper divisors (72754522).

145509038 is an equidigital number, since it uses as much as digits as its factorization.

145509038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72754521.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 145509038 is about 12062.7127131504. The cubic root of 145509038 is about 525.9728452973.

The spelling of 145509038 in words is "one hundred forty-five million, five hundred nine thousand, thirty-eight".