1381712836 has 24 divisors (see below), whose sum is σ = 2770044480. Its totient is φ = 590744352.

The previous prime is 1381712821. The next prime is 1381712837. The reversal of 1381712836 is 6382171831.

It is a super-2 number, since 2×1381712836² = 3818260722334325792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1381712837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47155 + ... + 70618.

It is an arithmetic number, because the mean of its divisors is an integer number (115418520).

Almost surely, 2^1381712836 is an apocalyptic number.

It is an amenable number.

1381712836 is an abundant number, since it is smaller than the sum of its proper divisors (1388331644).

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

1381712836 is a wasteful number, since it uses less digits than its factorization.

1381712836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118203 (or 118201 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 1381712836 is about 37171.3980904674. The cubic root of 1381712836 is about 1113.7967100335.

The spelling of 1381712836 in words is "one billion, three hundred eighty-one million, seven hundred twelve thousand, eight hundred thirty-six".