1318620426 has 16 divisors (see below), whose sum is σ = 2658008064. Its totient is φ = 436078944.

The previous prime is 1318620403. The next prime is 1318620427. The reversal of 1318620426 is 6240268131.

It is not an unprimeable number, because it can be changed into a prime (1318620427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864475 + ... + 865998.

It is an arithmetic number, because the mean of its divisors is an integer number (166125504).

Almost surely, 2^1318620426 is an apocalyptic number.

1318620426 is an abundant number, since it is smaller than the sum of its proper divisors (1339387638).

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

1318620426 is a wasteful number, since it uses less digits than its factorization.

1318620426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730605.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1318620426 is about 36312.8135236035. The cubic root of 1318620426 is about 1096.5790208849.

Adding to 1318620426 its reverse (6240268131), we get a palindrome (7558888557).

The spelling of 1318620426 in words is "one billion, three hundred eighteen million, six hundred twenty thousand, four hundred twenty-six".