1340022155 has 16 divisors (see below), whose sum is σ = 1657687680. Its totient is φ = 1039128192.

The previous prime is 1340022149. The next prime is 1340022157. The reversal of 1340022155 is 5512200431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340022155 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340022155.

It is not an unprimeable number, because it can be changed into a prime (1340022157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36302 + ... + 63228.

It is an arithmetic number, because the mean of its divisors is an integer number (103605480).

Almost surely, 2^1340022155 is an apocalyptic number.

1340022155 is a deficient number, since it is larger than the sum of its proper divisors (317665525).

1340022155 is a wasteful number, since it uses less digits than its factorization.

1340022155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27238.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1340022155 is about 36606.3130484347. The cubic root of 1340022155 is about 1102.4798473631.

Adding to 1340022155 its reverse (5512200431), we get a palindrome (6852222586).

The spelling of 1340022155 in words is "one billion, three hundred forty million, twenty-two thousand, one hundred fifty-five".