2630891986 has 8 divisors (see below), whose sum is σ = 3947082480. Its totient is φ = 1315197828.

The previous prime is 2630891983. The next prime is 2630891987. The reversal of 2630891986 is 6891980362.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (2630891983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110536 + ... + 132211.

It is an arithmetic number, because the mean of its divisors is an integer number (493385310).

Almost surely, 2^2630891986 is an apocalyptic number.

2630891986 is a deficient number, since it is larger than the sum of its proper divisors (1316190494).

2630891986 is a wasteful number, since it uses less digits than its factorization.

2630891986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248168.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 2630891986 is about 51292.2214960514. The cubic root of 2630891986 is about 1380.4934148923.

The spelling of 2630891986 in words is "two billion, six hundred thirty million, eight hundred ninety-one thousand, nine hundred eighty-six".