1320634156 has 6 divisors (see below), whose sum is σ = 2311109780. Its totient is φ = 660317076.

The previous prime is 1320634123. The next prime is 1320634177. The reversal of 1320634156 is 6514360231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165079266 + ... + 165079273.

Almost surely, 2^1320634156 is an apocalyptic number.

It is an amenable number.

1320634156 is a deficient number, since it is larger than the sum of its proper divisors (990475624).

1320634156 is a wasteful number, since it uses less digits than its factorization.

1320634156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330158543 (or 330158541 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1320634156 is about 36340.5304859464. The cubic root of 1320634156 is about 1097.1369501900.

Adding to 1320634156 its reverse (6514360231), we get a palindrome (7834994387).

The spelling of 1320634156 in words is "one billion, three hundred twenty million, six hundred thirty-four thousand, one hundred fifty-six".