388376561 has 8 divisors (see below), whose sum is σ = 394944000. Its totient is φ = 381850560.

The previous prime is 388376539. The next prime is 388376591. The reversal of 388376561 is 165673883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 388376561 - 2²⁶ = 321267697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (388376591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8840 + ... + 29238.

It is an arithmetic number, because the mean of its divisors is an integer number (49368000).

Almost surely, 2^388376561 is an apocalyptic number.

It is an amenable number.

388376561 is a deficient number, since it is larger than the sum of its proper divisors (6567439).

388376561 is a wasteful number, since it uses less digits than its factorization.

388376561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20719.

The product of its digits is 725760, while the sum is 47.

The square root of 388376561 is about 19707.2717797264. The cubic root of 388376561 is about 729.5991801004.

The spelling of 388376561 in words is "three hundred eighty-eight million, three hundred seventy-six thousand, five hundred sixty-one".