8388975381 has 4 divisors (see below), whose sum is σ = 11185300512. Its totient is φ = 5592650252.

The previous prime is 8388975337. The next prime is 8388975409. The reversal of 8388975381 is 1835798838.

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 a cyclic number.

It is not a de Polignac number, because 8388975381 - 2¹³ = 8388967189 is a prime.

It is a super-2 number, since 2×8388975381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8388975281) 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, 1398162561 + ... + 1398162566.

It is an arithmetic number, because the mean of its divisors is an integer number (2796325128).

Almost surely, 2^8388975381 is an apocalyptic number.

It is an amenable number.

8388975381 is a deficient number, since it is larger than the sum of its proper divisors (2796325131).

8388975381 is a wasteful number, since it uses less digits than its factorization.

8388975381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796325130.

The product of its digits is 11612160, while the sum is 60.

The square root of 8388975381 is about 91591.3499245425. The cubic root of 8388975381 is about 2031.9030082051.

The spelling of 8388975381 in words is "eight billion, three hundred eighty-eight million, nine hundred seventy-five thousand, three hundred eighty-one".