145938815 has 8 divisors (see below), whose sum is σ = 191047248. Its totient is φ = 106137280.

The previous prime is 145938809. The next prime is 145938823. The reversal of 145938815 is 518839541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145938815 - 2⁴ = 145938799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1326662 + ... + 1326771.

It is an arithmetic number, because the mean of its divisors is an integer number (23880906).

Almost surely, 2^145938815 is an apocalyptic number.

145938815 is a deficient number, since it is larger than the sum of its proper divisors (45108433).

145938815 is a wasteful number, since it uses less digits than its factorization.

145938815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653449.

The product of its digits is 172800, while the sum is 44.

The square root of 145938815 is about 12080.5138549649. The cubic root of 145938815 is about 526.4901759125.

The spelling of 145938815 in words is "one hundred forty-five million, nine hundred thirty-eight thousand, eight hundred fifteen".