1320618478 has 16 divisors (see below), whose sum is σ = 2007943056. Its totient is φ = 651329280.

The previous prime is 1320618473. The next prime is 1320618479. The reversal of 1320618478 is 8748160231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320618478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320618473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105808 + ... + 117628.

It is an arithmetic number, because the mean of its divisors is an integer number (125496441).

Almost surely, 2^1320618478 is an apocalyptic number.

1320618478 is a deficient number, since it is larger than the sum of its proper divisors (687324578).

1320618478 is a wasteful number, since it uses less digits than its factorization.

1320618478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1320618478 is about 36340.3147757418. The cubic root of 1320618478 is about 1097.1326085937.

It can be divided in two parts, 13206 and 18478, that added together give a square (31684 = 178²).

The spelling of 1320618478 in words is "one billion, three hundred twenty million, six hundred eighteen thousand, four hundred seventy-eight".