7864395161 has 8 divisors (see below), whose sum is σ = 9013784640. Its totient is φ = 6721481808.

The previous prime is 7864395151. The next prime is 7864395163. The reversal of 7864395161 is 1615934687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7864395161 - 2¹⁰ = 7864394137 is a prime.

It is a super-2 number, since 2×7864395161² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7864395163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616426 + ... + 1621283.

It is an arithmetic number, because the mean of its divisors is an integer number (1126723080).

Almost surely, 2^7864395161 is an apocalyptic number.

It is an amenable number.

7864395161 is a deficient number, since it is larger than the sum of its proper divisors (1149389479).

7864395161 is a wasteful number, since it uses less digits than its factorization.

7864395161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238063.

The product of its digits is 1088640, while the sum is 50.

The square root of 7864395161 is about 88681.4251182287. The cubic root of 7864395161 is about 1988.6351390415.

The spelling of 7864395161 in words is "seven billion, eight hundred sixty-four million, three hundred ninety-five thousand, one hundred sixty-one".