1381333782 has 16 divisors (see below), whose sum is σ = 2908071360. Its totient is φ = 436210632.

The previous prime is 1381333777. The next prime is 1381333799. The reversal of 1381333782 is 2873331831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1381333782.

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, 6058368 + ... + 6058595.

It is an arithmetic number, because the mean of its divisors is an integer number (181754460).

Almost surely, 2^1381333782 is an apocalyptic number.

1381333782 is an abundant number, since it is smaller than the sum of its proper divisors (1526737578).

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

1381333782 is a wasteful number, since it uses less digits than its factorization.

1381333782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12116987.

The product of its digits is 72576, while the sum is 39.

The square root of 1381333782 is about 37166.2990086449. The cubic root of 1381333782 is about 1113.6948490920.

The spelling of 1381333782 in words is "one billion, three hundred eighty-one million, three hundred thirty-three thousand, seven hundred eighty-two".