386762381 has 2 divisors, whose sum is σ = 386762382. Its totient is φ = 386762380.

The previous prime is 386762353. The next prime is 386762437. The reversal of 386762381 is 183267683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283922500 + 102839881 = 16850^2 + 10141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386762381 is a prime.

It is a super-4 number, since 4×386762381⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386762681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193381190 + 193381191.

It is an arithmetic number, because the mean of its divisors is an integer number (193381191).

Almost surely, 2^386762381 is an apocalyptic number.

It is an amenable number.

386762381 is a deficient number, since it is larger than the sum of its proper divisors (1).

386762381 is an equidigital number, since it uses as much as digits as its factorization.

386762381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 386762381 is about 19666.2752192681. The cubic root of 386762381 is about 728.5869839468.

The spelling of 386762381 in words is "three hundred eighty-six million, seven hundred sixty-two thousand, three hundred eighty-one".