2002187949 has 4 divisors (see below), whose sum is σ = 2669583936. Its totient is φ = 1334791964.

The previous prime is 2002187939. The next prime is 2002187953. The reversal of 2002187949 is 9497812002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2002187949 - 2⁷ = 2002187821 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002187949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002187939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333697989 + ... + 333697994.

It is an arithmetic number, because the mean of its divisors is an integer number (667395984).

Almost surely, 2^2002187949 is an apocalyptic number.

It is an amenable number.

2002187949 is a deficient number, since it is larger than the sum of its proper divisors (667395987).

2002187949 is an equidigital number, since it uses as much as digits as its factorization.

2002187949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667395986.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2002187949 is about 44745.8148769245. The cubic root of 2002187949 is about 1260.3803229581.

The spelling of 2002187949 in words is "two billion, two million, one hundred eighty-seven thousand, nine hundred forty-nine".