7842087361 has 4 divisors (see below), whose sum is σ = 7882720132. Its totient is φ = 7801454592.

The previous prime is 7842087347. The next prime is 7842087371. The reversal of 7842087361 is 1637802487.

7842087361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2585112336 + 5256975025 = 50844^2 + 72505^2 .

It is a cyclic number.

It is not a de Polignac number, because 7842087361 - 2²¹ = 7839990209 is a prime.

It is a super-2 number, since 2×7842087361² (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 (7842087371) 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, 20316096 + ... + 20316481.

It is an arithmetic number, because the mean of its divisors is an integer number (1970680033).

Almost surely, 2^7842087361 is an apocalyptic number.

It is an amenable number.

7842087361 is a deficient number, since it is larger than the sum of its proper divisors (40632771).

7842087361 is a wasteful number, since it uses less digits than its factorization.

7842087361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40632770.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 7842087361 is about 88555.5608699984. The cubic root of 7842087361 is about 1986.7530665089.

The spelling of 7842087361 in words is "seven billion, eight hundred forty-two million, eighty-seven thousand, three hundred sixty-one".