2981985 has 16 divisors (see below), whose sum is σ = 4850880. Its totient is φ = 1563840.

The previous prime is 2981981. The next prime is 2981999. The reversal of 2981985 is 5891892.

It is a happy number.

It is not a de Polignac number, because 2981985 - 2² = 2981981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2981981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715 + ... + 2544.

It is an arithmetic number, because the mean of its divisors is an integer number (303180).

2^2981985 is an apocalyptic number.

It is an amenable number.

2981985 is a deficient number, since it is larger than the sum of its proper divisors (1868895).

2981985 is a wasteful number, since it uses less digits than its factorization.

2981985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328.

The product of its digits is 51840, while the sum is 42.

The square root of 2981985 is about 1726.8424942652. The cubic root of 2981985 is about 143.9356869445.

The spelling of 2981985 in words is "two million, nine hundred eighty-one thousand, nine hundred eighty-five".