2491617086 has 16 divisors (see below), whose sum is σ = 4274007936. Its totient is φ = 1067169816.

The previous prime is 2491617083. The next prime is 2491617091. The reversal of 2491617086 is 6807161942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491617083) 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, 31916 + ... + 77471.

It is an arithmetic number, because the mean of its divisors is an integer number (267125496).

Almost surely, 2^2491617086 is an apocalyptic number.

2491617086 is a deficient number, since it is larger than the sum of its proper divisors (1782390850).

2491617086 is a wasteful number, since it uses less digits than its factorization.

2491617086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111023.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2491617086 is about 49916.1004686865. The cubic root of 2491617086 is about 1355.6901276052.

The spelling of 2491617086 in words is "two billion, four hundred ninety-one million, six hundred seventeen thousand, eighty-six".