2891170485 has 24 divisors (see below), whose sum is σ = 5727271680. Its totient is φ = 1321677792.

The previous prime is 2891170483. The next prime is 2891170487. The reversal of 2891170485 is 5840711982.

2891170485 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2891170483) and next prime (2891170487).

It is not a de Polignac number, because 2891170485 - 2¹ = 2891170483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2891170485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891170483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4588845 + ... + 4589474.

It is an arithmetic number, because the mean of its divisors is an integer number (238636320).

Almost surely, 2^2891170485 is an apocalyptic number.

It is an amenable number.

2891170485 is a deficient number, since it is larger than the sum of its proper divisors (2836101195).

2891170485 is a wasteful number, since it uses less digits than its factorization.

2891170485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9178337 (or 9178334 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 2891170485 is about 53769.6055871716. The cubic root of 2891170485 is about 1424.5944034953.

The spelling of 2891170485 in words is "two billion, eight hundred ninety-one million, one hundred seventy thousand, four hundred eighty-five".