1320623886 has 16 divisors (see below), whose sum is σ = 2796615504. Its totient is φ = 414313344.

The previous prime is 1320623827. The next prime is 1320623911. The reversal of 1320623886 is 6883260231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6473545 + ... + 6473748.

It is an arithmetic number, because the mean of its divisors is an integer number (174788469).

Almost surely, 2^1320623886 is an apocalyptic number.

1320623886 is an abundant number, since it is smaller than the sum of its proper divisors (1475991618).

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

1320623886 is a wasteful number, since it uses less digits than its factorization.

1320623886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947315.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 1320623886 is about 36340.3891833866. The cubic root of 1320623886 is about 1097.1341061963.

The spelling of 1320623886 in words is "one billion, three hundred twenty million, six hundred twenty-three thousand, eight hundred eighty-six".