388368641 has 4 divisors (see below), whose sum is σ = 391162800. Its totient is φ = 385574484.

The previous prime is 388368637. The next prime is 388368671. The reversal of 388368641 is 146863883.

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: 146863883 = 229 ⋅641327.

It is a cyclic number.

It is not a de Polignac number, because 388368641 - 2² = 388368637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388368611) 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, 1396871 + ... + 1397148.

It is an arithmetic number, because the mean of its divisors is an integer number (97790700).

Almost surely, 2^388368641 is an apocalyptic number.

It is an amenable number.

388368641 is a deficient number, since it is larger than the sum of its proper divisors (2794159).

388368641 is a wasteful number, since it uses less digits than its factorization.

388368641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794158.

The product of its digits is 663552, while the sum is 47.

The square root of 388368641 is about 19707.0708376461. The cubic root of 388368641 is about 729.5942205968.

The spelling of 388368641 in words is "three hundred eighty-eight million, three hundred sixty-eight thousand, six hundred forty-one".