386545381 has 4 divisors (see below), whose sum is σ = 388860192. Its totient is φ = 384230572.

The previous prime is 386545333. The next prime is 386545451. The reversal of 386545381 is 183545683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 386545381 - 2⁹ = 386544869 is a prime.

It is a super-2 number, since 2×386545381² = 298834663144870322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386545331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157155 + ... + 1157488.

It is an arithmetic number, because the mean of its divisors is an integer number (97215048).

Almost surely, 2^386545381 is an apocalyptic number.

It is an amenable number.

386545381 is a deficient number, since it is larger than the sum of its proper divisors (2314811).

386545381 is a wasteful number, since it uses less digits than its factorization.

386545381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314810.

The product of its digits is 345600, while the sum is 43.

The square root of 386545381 is about 19660.7573862250. The cubic root of 386545381 is about 728.4506961713.

The spelling of 386545381 in words is "three hundred eighty-six million, five hundred forty-five thousand, three hundred eighty-one".