1381662416 has 20 divisors (see below), whose sum is σ = 2678099424. Its totient is φ = 690540000.

The previous prime is 1381662397. The next prime is 1381662419. The reversal of 1381662416 is 6142661831.

It is a self number, because there is not a number n which added to its sum of digits gives 1381662416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381662419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23891 + ... + 57741.

Almost surely, 2^1381662416 is an apocalyptic number.

1381662416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381662416 is a deficient number, since it is larger than the sum of its proper divisors (1296437008).

1381662416 is a wasteful number, since it uses less digits than its factorization.

1381662416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36410 (or 36404 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 1381662416 is about 37170.7198746540. The cubic root of 1381662416 is about 1113.7831620391.

The spelling of 1381662416 in words is "one billion, three hundred eighty-one million, six hundred sixty-two thousand, four hundred sixteen".