2002187939 has 2 divisors, whose sum is σ = 2002187940. Its totient is φ = 2002187938.

The previous prime is 2002187899. The next prime is 2002187953. The reversal of 2002187939 is 9397812002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002187939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002187896 and 2002187905.

It is not a weakly prime, because it can be changed into another prime (2002187969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001093969 + 1001093970.

It is an arithmetic number, because the mean of its divisors is an integer number (1001093970).

Almost surely, 2^2002187939 is an apocalyptic number.

2002187939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002187939 is an equidigital number, since it uses as much as digits as its factorization.

2002187939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2002187939 is about 44745.8147651822. The cubic root of 2002187939 is about 1260.3803208598.

The spelling of 2002187939 in words is "two billion, two million, one hundred eighty-seven thousand, nine hundred thirty-nine".