2489667161 has 8 divisors (see below), whose sum is σ = 2518822920. Its totient is φ = 2460670848.

The previous prime is 2489667107. The next prime is 2489667179. The reversal of 2489667161 is 1617669842.

It can be written as a sum of positive squares in 4 ways, for example, as 1042321225 + 1447345936 = 32285^2 + 38044^2 .

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 2489667161 - 2¹⁴ = 2489650777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2489667181) 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, 8306 + ... + 71051.

It is an arithmetic number, because the mean of its divisors is an integer number (314852865).

Almost surely, 2^2489667161 is an apocalyptic number.

It is an amenable number.

2489667161 is a deficient number, since it is larger than the sum of its proper divisors (29155759).

2489667161 is a wasteful number, since it uses less digits than its factorization.

2489667161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79723.

The product of its digits is 870912, while the sum is 50.

The square root of 2489667161 is about 49896.5646212242. The cubic root of 2489667161 is about 1355.3363835807.

The spelling of 2489667161 in words is "two billion, four hundred eighty-nine million, six hundred sixty-seven thousand, one hundred sixty-one".