381148845 has 32 divisors (see below), whose sum is σ = 760320000. Its totient is φ = 158399040.

The previous prime is 381148843. The next prime is 381148853. The reversal of 381148845 is 548841183.

It is not a de Polignac number, because 381148845 - 2¹ = 381148843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381148797 and 381148806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381148843) 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, 163845 + ... + 166154.

It is an arithmetic number, because the mean of its divisors is an integer number (23760000).

Almost surely, 2^381148845 is an apocalyptic number.

381148845 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381148845 is a deficient number, since it is larger than the sum of its proper divisors (379171155).

381148845 is a wasteful number, since it uses less digits than its factorization.

381148845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330025.

The product of its digits is 122880, while the sum is 42.

The square root of 381148845 is about 19523.0337038074. The cubic root of 381148845 is about 725.0448454226.

The spelling of 381148845 in words is "three hundred eighty-one million, one hundred forty-eight thousand, eight hundred forty-five".