393748145 has 16 divisors (see below), whose sum is σ = 543628800. Its totient is φ = 268183104.

The previous prime is 393748111. The next prime is 393748163. The reversal of 393748145 is 541847393.

It is not a de Polignac number, because 393748145 - 2²⁰ = 392699569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 393748096 and 393748105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32537 + ... + 42966.

It is an arithmetic number, because the mean of its divisors is an integer number (33976800).

Almost surely, 2^393748145 is an apocalyptic number.

393748145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

393748145 is a deficient number, since it is larger than the sum of its proper divisors (149880655).

393748145 is a wasteful number, since it uses less digits than its factorization.

393748145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75664.

The product of its digits is 362880, while the sum is 44.

The square root of 393748145 is about 19843.0880913229. The cubic root of 393748145 is about 732.9474534365.

The spelling of 393748145 in words is "three hundred ninety-three million, seven hundred forty-eight thousand, one hundred forty-five".