8275437381 has 4 divisors (see below), whose sum is σ = 11033916512. Its totient is φ = 5516958252.

The previous prime is 8275437319. The next prime is 8275437389. The reversal of 8275437381 is 1837345728.

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 8275437381 - 2²⁵ = 8241882949 is a prime.

It is a super-2 number, since 2×8275437381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8275437381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8275437389) 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, 1379239561 + ... + 1379239566.

It is an arithmetic number, because the mean of its divisors is an integer number (2758479128).

Almost surely, 2^8275437381 is an apocalyptic number.

It is an amenable number.

8275437381 is a deficient number, since it is larger than the sum of its proper divisors (2758479131).

8275437381 is a wasteful number, since it uses less digits than its factorization.

8275437381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758479130.

The product of its digits is 1128960, while the sum is 48.

The square root of 8275437381 is about 90969.4310249328. The cubic root of 8275437381 is about 2022.6946181726.

The spelling of 8275437381 in words is "eight billion, two hundred seventy-five million, four hundred thirty-seven thousand, three hundred eighty-one".