1381711672 has 32 divisors (see below), whose sum is σ = 2830993920. Its totient is φ = 626991840.

The previous prime is 1381711663. The next prime is 1381711679. The reversal of 1381711672 is 2761171831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381711679) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 40483 + ... + 66349.

It is an arithmetic number, because the mean of its divisors is an integer number (88468560).

Almost surely, 2^1381711672 is an apocalyptic number.

It is an amenable number.

1381711672 is an abundant number, since it is smaller than the sum of its proper divisors (1449282248).

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

1381711672 is a wasteful number, since it uses less digits than its factorization.

1381711672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26491 (or 26487 counting only the distinct ones).

The product of its digits is 14112, while the sum is 37.

The square root of 1381711672 is about 37171.3824332644. The cubic root of 1381711672 is about 1113.7963972672.

The spelling of 1381711672 in words is "one billion, three hundred eighty-one million, seven hundred eleven thousand, six hundred seventy-two".