1380013506 has 48 divisors (see below), whose sum is σ = 3073438368. Its totient is φ = 447249600.

The previous prime is 1380013489. The next prime is 1380013507. The reversal of 1380013506 is 6053100831.

It is a self number, because there is not a number n which added to its sum of digits gives 1380013506.

It is not an unprimeable number, because it can be changed into a prime (1380013507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223521 + ... + 229611.

It is an arithmetic number, because the mean of its divisors is an integer number (64029966).

Almost surely, 2^1380013506 is an apocalyptic number.

1380013506 is an abundant number, since it is smaller than the sum of its proper divisors (1693424862).

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

1380013506 is a wasteful number, since it uses less digits than its factorization.

1380013506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447 (or 6444 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1380013506 is about 37148.5330262179. The cubic root of 1380013506 is about 1113.3399135670.

The spelling of 1380013506 in words is "one billion, three hundred eighty million, thirteen thousand, five hundred six".