2651967987 has 8 divisors (see below), whose sum is σ = 3538255104. Its totient is φ = 1766829768.

The previous prime is 2651967979. The next prime is 2651967991. The reversal of 2651967987 is 7897691562.

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

It is not a de Polignac number, because 2651967987 - 2³ = 2651967979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2651967987.

It is not an unprimeable number, because it can be changed into a prime (2651967947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281823 + ... + 291080.

It is an arithmetic number, because the mean of its divisors is an integer number (442281888).

Almost surely, 2^2651967987 is an apocalyptic number.

2651967987 is a deficient number, since it is larger than the sum of its proper divisors (886287117).

2651967987 is a wasteful number, since it uses less digits than its factorization.

2651967987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574449.

The product of its digits is 11430720, while the sum is 60.

The square root of 2651967987 is about 51497.2619369224. The cubic root of 2651967987 is about 1384.1699791993.

The spelling of 2651967987 in words is "two billion, six hundred fifty-one million, nine hundred sixty-seven thousand, nine hundred eighty-seven".