388268081 has 4 divisors (see below), whose sum is σ = 396529152. Its totient is φ = 380007012.

The previous prime is 388268077. The next prime is 388268131. The reversal of 388268081 is 180862883.

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, and also an emirpimes, since its reverse is a distinct semiprime: 180862883 = 3251 ⋅55633.

It is a cyclic number.

It is not a de Polignac number, because 388268081 - 2² = 388268077 is a prime.

It is a super-2 number, since 2×388268081² = 301504205446845122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388268051) 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, 4130465 + ... + 4130558.

It is an arithmetic number, because the mean of its divisors is an integer number (99132288).

Almost surely, 2^388268081 is an apocalyptic number.

It is an amenable number.

388268081 is a deficient number, since it is larger than the sum of its proper divisors (8261071).

388268081 is an equidigital number, since it uses as much as digits as its factorization.

388268081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8261070.

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 388268081 is about 19704.5193039566. The cubic root of 388268081 is about 729.5312440668.

The spelling of 388268081 in words is "three hundred eighty-eight million, two hundred sixty-eight thousand, eighty-one".