2640191048 has 32 divisors (see below), whose sum is σ = 5416765920. Its totient is φ = 1196448000.

The previous prime is 2640191041. The next prime is 2640191077. The reversal of 2640191048 is 8401910462.

It is a happy number.

2640191048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2640190999 and 2640191017.

It is not an unprimeable number, because it can be changed into a prime (2640191041) 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, 16193 + ... + 74448.

It is an arithmetic number, because the mean of its divisors is an integer number (169273935).

Almost surely, 2^2640191048 is an apocalyptic number.

It is an amenable number.

2640191048 is an abundant number, since it is smaller than the sum of its proper divisors (2776574872).

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

2640191048 is a wasteful number, since it uses less digits than its factorization.

2640191048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90989 (or 90985 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 2640191048 is about 51382.7894143555. The cubic root of 2640191048 is about 1382.1179841510.

The spelling of 2640191048 in words is "two billion, six hundred forty million, one hundred ninety-one thousand, forty-eight".