2002149 has 6 divisors (see below), whose sum is σ = 2892006. Its totient is φ = 1334760.

The previous prime is 2002093. The next prime is 2002151. The reversal of 2002149 is 9412002.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 22500 = 1407^2 + 150^2 .

It is not a de Polignac number, because 2002149 - 2¹⁵ = 1969381 is a prime.

It is an Ulam number.

2002149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111222 + ... + 111239.

It is an arithmetic number, because the mean of its divisors is an integer number (482001).

2^2002149 is an apocalyptic number.

It is an amenable number.

2002149 is a deficient number, since it is larger than the sum of its proper divisors (889857).

2002149 is a wasteful number, since it uses less digits than its factorization.

2002149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222467 (or 222464 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2002149 is about 1414.9731446215. The cubic root of 2002149 is about 126.0372150087.

The spelling of 2002149 in words is "two million, two thousand, one hundred forty-nine".