7165885386 has 48 divisors (see below), whose sum is σ = 16068840480. Its totient is φ = 2112765120.

The previous prime is 7165885369. The next prime is 7165885403. The reversal of 7165885386 is 6835885617.

It is an interprime number because it is at equal distance from previous prime (7165885369) and next prime (7165885403).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50700 + ... + 130008.

It is an arithmetic number, because the mean of its divisors is an integer number (334767510).

Almost surely, 2^7165885386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7165885386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8034420240).

7165885386 is an abundant number, since it is smaller than the sum of its proper divisors (8902955094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7165885386 is a wasteful number, since it uses less digits than its factorization.

7165885386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79399 (or 79362 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 57.

The square root of 7165885386 is about 84651.5527678022. The cubic root of 7165885386 is about 1927.9241899925.

The spelling of 7165885386 in words is "seven billion, one hundred sixty-five million, eight hundred eighty-five thousand, three hundred eighty-six".