16291034381 has 4 divisors (see below), whose sum is σ = 16291640064. Its totient is φ = 16290428700.

The previous prime is 16291034377. The next prime is 16291034387. The reversal of 16291034381 is 18343019261.

16291034381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 16291034381 - 2² = 16291034377 is a prime.

It is a super-3 number, since 3×16291034381³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16291034387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260525 + ... + 316946.

It is an arithmetic number, because the mean of its divisors is an integer number (4072910016).

Almost surely, 2^16291034381 is an apocalyptic number.

It is an amenable number.

16291034381 is a deficient number, since it is larger than the sum of its proper divisors (605683).

16291034381 is an equidigital number, since it uses as much as digits as its factorization.

16291034381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605682.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 16291034381 in words is "sixteen billion, two hundred ninety-one million, thirty-four thousand, three hundred eighty-one".