7381132481 has 4 divisors (see below), whose sum is σ = 7470061872. Its totient is φ = 7292203092.

The previous prime is 7381132477. The next prime is 7381132487. The reversal of 7381132481 is 1842311837.

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 7381132481 - 2² = 7381132477 is a prime.

It is a super-2 number, since 2×7381132481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7381132487) 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, 44464571 + ... + 44464736.

It is an arithmetic number, because the mean of its divisors is an integer number (1867515468).

Almost surely, 2^7381132481 is an apocalyptic number.

It is an amenable number.

7381132481 is a deficient number, since it is larger than the sum of its proper divisors (88929391).

7381132481 is an equidigital number, since it uses as much as digits as its factorization.

7381132481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88929390.

The product of its digits is 32256, while the sum is 38.

The square root of 7381132481 is about 85913.5174521449. The cubic root of 7381132481 is about 1947.0375777090.

The spelling of 7381132481 in words is "seven billion, three hundred eighty-one million, one hundred thirty-two thousand, four hundred eighty-one".