2239171001987 has 2 divisors, whose sum is σ = 2239171001988. Its totient is φ = 2239171001986.

The previous prime is 2239171001927. The next prime is 2239171002023. The reversal of 2239171001987 is 7891001719322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2239171001987 - 2¹⁶ = 2239170936451 is a prime.

It is a super-2 number, since 2×2239171001987² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2239171001927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119585500993 + 1119585500994.

It is an arithmetic number, because the mean of its divisors is an integer number (1119585500994).

Almost surely, 2^{2239171001987} is an apocalyptic number.

2239171001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239171001987 is an equidigital number, since it uses as much as digits as its factorization.

2239171001987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 50.

The spelling of 2239171001987 in words is "two trillion, two hundred thirty-nine billion, one hundred seventy-one million, one thousand, nine hundred eighty-seven".