2640245422 has 8 divisors (see below), whose sum is σ = 3966788736. Its totient is φ = 1317982512.

The previous prime is 2640245411. The next prime is 2640245423. The reversal of 2640245422 is 2245420462.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640245423) 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, 1068558 + ... + 1071025.

It is an arithmetic number, because the mean of its divisors is an integer number (495848592).

Almost surely, 2^2640245422 is an apocalyptic number.

2640245422 is a deficient number, since it is larger than the sum of its proper divisors (1326543314).

2640245422 is a wasteful number, since it uses less digits than its factorization.

2640245422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140202.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 2640245422 is about 51383.3185187566. The cubic root of 2640245422 is about 1382.1274721977.

Adding to 2640245422 its reverse (2245420462), we get a palindrome (4885665884).

It can be divided in two parts, 26402 and 45422, that added together give a square (71824 = 268²).

The spelling of 2640245422 in words is "two billion, six hundred forty million, two hundred forty-five thousand, four hundred twenty-two".