7816384061 has 4 divisors (see below), whose sum is σ = 7844602332. Its totient is φ = 7788165792.

The previous prime is 7816384019. The next prime is 7816384087. The reversal of 7816384061 is 1604836187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1604836187 = 37 ⋅43373951.

It can be written as a sum of positive squares in 2 ways, for example, as 3916381561 + 3900002500 = 62581^2 + 62450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7816384061 is a prime.

It is a super-2 number, since 2×7816384061² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7816384001) 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, 14108720 + ... + 14109273.

It is an arithmetic number, because the mean of its divisors is an integer number (1961150583).

Almost surely, 2^7816384061 is an apocalyptic number.

It is an amenable number.

7816384061 is a deficient number, since it is larger than the sum of its proper divisors (28218271).

7816384061 is a wasteful number, since it uses less digits than its factorization.

7816384061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28218270.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 7816384061 is about 88410.3164851252. The cubic root of 7816384061 is about 1984.5800904825.

The spelling of 7816384061 in words is "seven billion, eight hundred sixteen million, three hundred eighty-four thousand, sixty-one".