8731551379 has 2 divisors, whose sum is σ = 8731551380. Its totient is φ = 8731551378.

The previous prime is 8731551263. The next prime is 8731551427. The reversal of 8731551379 is 9731551378.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8731551379 - 2¹¹ = 8731549331 is a prime.

It is not a weakly prime, because it can be changed into another prime (8731555379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4365775689 + 4365775690.

It is an arithmetic number, because the mean of its divisors is an integer number (4365775690).

Almost surely, 2^8731551379 is an apocalyptic number.

8731551379 is a deficient number, since it is larger than the sum of its proper divisors (1).

8731551379 is an equidigital number, since it uses as much as digits as its factorization.

8731551379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 49.

The square root of 8731551379 is about 93442.7706085388. The cubic root of 8731551379 is about 2059.1934017353.

Subtracting 8731551379 from its reverse (9731551378), we obtain a palindrome (999999999).

The spelling of 8731551379 in words is "eight billion, seven hundred thirty-one million, five hundred fifty-one thousand, three hundred seventy-nine".