7842001481 has 2 divisors, whose sum is σ = 7842001482. Its totient is φ = 7842001480.

The previous prime is 7842001471. The next prime is 7842001493. The reversal of 7842001481 is 1841002487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7841988025 + 13456 = 88555^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 7842001481 - 2¹⁰ = 7842000457 is a prime.

It is a super-2 number, since 2×7842001481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7842001411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3921000740 + 3921000741.

It is an arithmetic number, because the mean of its divisors is an integer number (3921000741).

Almost surely, 2^7842001481 is an apocalyptic number.

It is an amenable number.

7842001481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7842001481 is an equidigital number, since it uses as much as digits as its factorization.

7842001481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 7842001481 is about 88555.0759753499. The cubic root of 7842001481 is about 1986.7458140616.

The spelling of 7842001481 in words is "seven billion, eight hundred forty-two million, one thousand, four hundred eighty-one".