2391486671988 has 48 divisors (see below), whose sum is σ = 6344340192960. Its totient is φ = 778623566112.

The previous prime is 2391486671953. The next prime is 2391486671989. The reversal of 2391486671988 is 8891766841932.

2391486671988 is a `hidden beast` number, since 2 + 3 + 9 + 1 + 486 + 67 + 1 + 9 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391486671989) 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 in 15 ways as a sum of consecutive naturals, for example, 257476695 + ... + 257485982.

It is an arithmetic number, because the mean of its divisors is an integer number (132173754020).

Almost surely, 2^{2391486671988} is an apocalyptic number.

It is an amenable number.

2391486671988 is an abundant number, since it is smaller than the sum of its proper divisors (3952853520972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2391486671988 is a wasteful number, since it uses less digits than its factorization.

2391486671988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514962733 (or 514962725 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The spelling of 2391486671988 in words is "two trillion, three hundred ninety-one billion, four hundred eighty-six million, six hundred seventy-one thousand, nine hundred eighty-eight".