7481945671 has 2 divisors, whose sum is σ = 7481945672. Its totient is φ = 7481945670.

The previous prime is 7481945629. The next prime is 7481945687. The reversal of 7481945671 is 1765491847.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7481945671 is a prime.

It is a super-2 number, since 2×7481945671² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7481945071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3740972835 + 3740972836.

It is an arithmetic number, because the mean of its divisors is an integer number (3740972836).

Almost surely, 2^7481945671 is an apocalyptic number.

7481945671 is a deficient number, since it is larger than the sum of its proper divisors (1).

7481945671 is an equidigital number, since it uses as much as digits as its factorization.

7481945671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 52.

The square root of 7481945671 is about 86498.2408549446. The cubic root of 7481945671 is about 1955.8618850451.

The spelling of 7481945671 in words is "seven billion, four hundred eighty-one million, nine hundred forty-five thousand, six hundred seventy-one".