2487661989 has 8 divisors (see below), whose sum is σ = 3320388960. Its totient is φ = 1656688176.

The previous prime is 2487661951. The next prime is 2487661993. The reversal of 2487661989 is 9891667842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2487661989 - 2¹⁷ = 2487530917 is a prime.

It is a super-3 number, since 3×2487661989³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2487661999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434974 + ... + 440655.

It is an arithmetic number, because the mean of its divisors is an integer number (415048620).

Almost surely, 2^2487661989 is an apocalyptic number.

It is an amenable number.

2487661989 is a deficient number, since it is larger than the sum of its proper divisors (832726971).

2487661989 is an equidigital number, since it uses as much as digits as its factorization.

2487661989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876579.

The product of its digits is 10450944, while the sum is 60.

The square root of 2487661989 is about 49876.4672866874. The cubic root of 2487661989 is about 1354.9724242878.

The spelling of 2487661989 in words is "two billion, four hundred eighty-seven million, six hundred sixty-one thousand, nine hundred eighty-nine".