2158767161 has 8 divisors (see below), whose sum is σ = 2180404800. Its totient is φ = 2137217040.

The previous prime is 2158767139. The next prime is 2158767167. The reversal of 2158767161 is 1617678512.

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 2158767161 - 2²⁶ = 2091658297 is a prime.

It is a super-3 number, since 3×2158767161³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2158767167) 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, 28271 + ... + 71531.

It is an arithmetic number, because the mean of its divisors is an integer number (272550600).

Almost surely, 2^2158767161 is an apocalyptic number.

It is an amenable number.

2158767161 is a deficient number, since it is larger than the sum of its proper divisors (21637639).

2158767161 is a wasteful number, since it uses less digits than its factorization.

2158767161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43759.

The product of its digits is 141120, while the sum is 44.

The square root of 2158767161 is about 46462.5350255450. The cubic root of 2158767161 is about 1292.4148347048.

The spelling of 2158767161 in words is "two billion, one hundred fifty-eight million, seven hundred sixty-seven thousand, one hundred sixty-one".