2640849354 has 96 divisors (see below), whose sum is σ = 6822938304. Its totient is φ = 727626240.

The previous prime is 2640849283. The next prime is 2640849371. The reversal of 2640849354 is 4539480462.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164802 + ... + 180114.

It is an arithmetic number, because the mean of its divisors is an integer number (71072274).

Almost surely, 2^2640849354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640849354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3411469152).

2640849354 is an abundant number, since it is smaller than the sum of its proper divisors (4182088950).

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

2640849354 is a wasteful number, since it uses less digits than its factorization.

2640849354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15412 (or 15409 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 2640849354 is about 51389.1949148846. The cubic root of 2640849354 is about 1382.2328471709.

The spelling of 2640849354 in words is "two billion, six hundred forty million, eight hundred forty-nine thousand, three hundred fifty-four".