1340642622 has 64 divisors (see below), whose sum is σ = 3106563840. Its totient is φ = 381427200.

The previous prime is 1340642621. The next prime is 1340642657. The reversal of 1340642622 is 2262460431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340642622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340642621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136972 + ... + 146432.

It is an arithmetic number, because the mean of its divisors is an integer number (48540060).

Almost surely, 2^1340642622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340642622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553281920).

1340642622 is an abundant number, since it is smaller than the sum of its proper divisors (1765921218).

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

1340642622 is a wasteful number, since it uses less digits than its factorization.

1340642622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1340642622 is about 36614.7869309655. The cubic root of 1340642622 is about 1102.6499805732.

The spelling of 1340642622 in words is "one billion, three hundred forty million, six hundred forty-two thousand, six hundred twenty-two".