2891095 has 8 divisors (see below), whose sum is σ = 3526560. Its totient is φ = 2274720.

The previous prime is 2891093. The next prime is 2891101. The reversal of 2891095 is 5901982.

2891095 = 432² + 433² + ... + 446².

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

It is not a de Polignac number, because 2891095 - 2¹ = 2891093 is a prime.

It is an Ulam number.

2891095 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2891095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891093) 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, 4435 + ... + 5044.

It is an arithmetic number, because the mean of its divisors is an integer number (440820).

2^2891095 is an apocalyptic number.

2891095 is a deficient number, since it is larger than the sum of its proper divisors (635465).

2891095 is an equidigital number, since it uses as much as digits as its factorization.

2891095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2891095 is about 1700.3220283229. The cubic root of 2891095 is about 142.4582005236.

The spelling of 2891095 in words is "two million, eight hundred ninety-one thousand, ninety-five".