1381713444 has 48 divisors (see below), whose sum is σ = 3586813440. Its totient is φ = 459980640.

The previous prime is 1381713433. The next prime is 1381713467. The reversal of 1381713444 is 4443171831.

It is a super-2 number, since 2×1381713444² = 3818264082660682272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1381713399 and 1381713408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80877 + ... + 96459.

It is an arithmetic number, because the mean of its divisors is an integer number (74725280).

Almost surely, 2^1381713444 is an apocalyptic number.

It is an amenable number.

1381713444 is an abundant number, since it is smaller than the sum of its proper divisors (2205099996).

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

1381713444 is a wasteful number, since it uses less digits than its factorization.

1381713444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16417 (or 16409 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1381713444 is about 37171.4062687975. The cubic root of 1381713444 is about 1113.7968734028.

It can be divided in two parts, 13817 and 13444, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 1381713444 in words is "one billion, three hundred eighty-one million, seven hundred thirteen thousand, four hundred forty-four".