1381742187864 has 16 divisors (see below), whose sum is σ = 3454355469720. Its totient is φ = 460580729280.

The previous prime is 1381742187851. The next prime is 1381742187887. The reversal of 1381742187864 is 4687812471831.

It is a super-2 number, since 2×1381742187864² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1381742187798 and 1381742187807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28786295557 + ... + 28786295604.

Almost surely, 2^{1381742187864} is an apocalyptic number.

It is an amenable number.

1381742187864 is an abundant number, since it is smaller than the sum of its proper divisors (2072613281856).

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

1381742187864 is a wasteful number, since it uses less digits than its factorization.

1381742187864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57572591170 (or 57572591166 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 60.

The spelling of 1381742187864 in words is "one trillion, three hundred eighty-one billion, seven hundred forty-two million, one hundred eighty-seven thousand, eight hundred sixty-four".