9184157661 has 48 divisors (see below), whose sum is σ = 15044789760. Its totient is φ = 4955217120.

The previous prime is 9184157659. The next prime is 9184157677. The reversal of 9184157661 is 1667514819.

It is a happy number.

It is not a de Polignac number, because 9184157661 - 2¹ = 9184157659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9184157661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9184157161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 852096 + ... + 862806.

It is an arithmetic number, because the mean of its divisors is an integer number (313433120).

Almost surely, 2^9184157661 is an apocalyptic number.

It is an amenable number.

9184157661 is a deficient number, since it is larger than the sum of its proper divisors (5860632099).

9184157661 is a wasteful number, since it uses less digits than its factorization.

9184157661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054 (or 11047 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 9184157661 is about 95834.0109825317. The cubic root of 9184157661 is about 2094.1756723343.

The spelling of 9184157661 in words is "nine billion, one hundred eighty-four million, one hundred fifty-seven thousand, six hundred sixty-one".