16413682381 has 4 divisors (see below), whose sum is σ = 16419458592. Its totient is φ = 16407906172.

The previous prime is 16413682379. The next prime is 16413682391. The reversal of 16413682381 is 18328631461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18328631461 = 7 ⋅2618375923.

It is a cyclic number.

It is not a de Polignac number, because 16413682381 - 2¹ = 16413682379 is a prime.

It is a super-2 number, since 2×16413682381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16413682321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883841 + ... + 2889526.

It is an arithmetic number, because the mean of its divisors is an integer number (4104864648).

Almost surely, 2^16413682381 is an apocalyptic number.

It is an amenable number.

16413682381 is a deficient number, since it is larger than the sum of its proper divisors (5776211).

16413682381 is an equidigital number, since it uses as much as digits as its factorization.

16413682381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776210.

The product of its digits is 165888, while the sum is 43.

The spelling of 16413682381 in words is "sixteen billion, four hundred thirteen million, six hundred eighty-two thousand, three hundred eighty-one".