3888401561 has 4 divisors (see below), whose sum is σ = 4241892624. Its totient is φ = 3534910500.

The previous prime is 3888401497. The next prime is 3888401593. The reversal of 3888401561 is 1651048883.

It is a happy number.

3888401561 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3888401561 - 2⁶ = 3888401497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3888401261) 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, 176745515 + ... + 176745536.

It is an arithmetic number, because the mean of its divisors is an integer number (1060473156).

Almost surely, 2^3888401561 is an apocalyptic number.

It is an amenable number.

3888401561 is a deficient number, since it is larger than the sum of its proper divisors (353491063).

3888401561 is a wasteful number, since it uses less digits than its factorization.

3888401561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353491062.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 3888401561 is about 62357.0490081113. The cubic root of 3888401561 is about 1572.4989698230.

The spelling of 3888401561 in words is "three billion, eight hundred eighty-eight million, four hundred one thousand, five hundred sixty-one".