8791962381 has 6 divisors (see below), whose sum is σ = 12699501230. Its totient is φ = 5861308248.

The previous prime is 8791962353. The next prime is 8791962419. The reversal of 8791962381 is 1832691978.

8791962381 is a `hidden beast` number, since 8 + 7 + 9 + 1 + 9 + 623 + 8 + 1 = 666.

8791962381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7515329481 + 1276632900 = 86691^2 + 35730^2 .

It is not a de Polignac number, because 8791962381 - 2⁶ = 8791962317 is a prime.

It is a super-2 number, since 2×8791962381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8791963381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 488442346 + ... + 488442363.

Almost surely, 2^8791962381 is an apocalyptic number.

It is an amenable number.

8791962381 is a deficient number, since it is larger than the sum of its proper divisors (3907538849).

8791962381 is a wasteful number, since it uses less digits than its factorization.

8791962381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976884715 (or 976884712 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 8791962381 is about 93765.4647564870. The cubic root of 8791962381 is about 2063.9314732127.

The spelling of 8791962381 in words is "eight billion, seven hundred ninety-one million, nine hundred sixty-two thousand, three hundred eighty-one".