1320218402 has 8 divisors (see below), whose sum is σ = 2096817516. Its totient is φ = 621279232.

The previous prime is 1320218399. The next prime is 1320218413. The reversal of 1320218402 is 2048120231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1280136841 + 40081561 = 35779^2 + 6331^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19414943 + ... + 19415010.

Almost surely, 2^1320218402 is an apocalyptic number.

1320218402 is a deficient number, since it is larger than the sum of its proper divisors (776599114).

1320218402 is a wasteful number, since it uses less digits than its factorization.

1320218402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38829972.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1320218402 is about 36334.8097834570. The cubic root of 1320218402 is about 1097.0218067825.

Adding to 1320218402 its reverse (2048120231), we get a palindrome (3368338633).

The spelling of 1320218402 in words is "one billion, three hundred twenty million, two hundred eighteen thousand, four hundred two".