2987729845 has 8 divisors (see below), whose sum is σ = 3590872920. Its totient is φ = 2386452480.

The previous prime is 2987729837. The next prime is 2987729869. The reversal of 2987729845 is 5489277892.

It can be written as a sum of positive squares in 4 ways, for example, as 1661459121 + 1326270724 = 40761^2 + 36418^2 .

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

It is not a de Polignac number, because 2987729845 - 2³ = 2987729837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462900 + ... + 469309.

It is an arithmetic number, because the mean of its divisors is an integer number (448859115).

Almost surely, 2^2987729845 is an apocalyptic number.

It is an amenable number.

2987729845 is a deficient number, since it is larger than the sum of its proper divisors (603143075).

2987729845 is an equidigital number, since it uses as much as digits as its factorization.

2987729845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932855.

The product of its digits is 20321280, while the sum is 61.

The square root of 2987729845 is about 54660.1303053697. The cubic root of 2987729845 is about 1440.2805917015.

The spelling of 2987729845 in words is "two billion, nine hundred eighty-seven million, seven hundred twenty-nine thousand, eight hundred forty-five".