16538041739 has 8 divisors (see below), whose sum is σ = 17272563360. Its totient is φ = 15804809856.

The previous prime is 16538041733. The next prime is 16538041757. The reversal of 16538041739 is 93714083561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16538041739 - 2¹² = 16538037643 is a prime.

It is a super-2 number, since 2×16538041739² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16538041693 and 16538041702.

It is not an unprimeable number, because it can be changed into a prime (16538041733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296174 + ... + 347555.

It is an arithmetic number, because the mean of its divisors is an integer number (2159070420).

Almost surely, 2^16538041739 is an apocalyptic number.

16538041739 is a deficient number, since it is larger than the sum of its proper divisors (734521621).

16538041739 is a wasteful number, since it uses less digits than its factorization.

16538041739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644869.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 16538041739 in words is "sixteen billion, five hundred thirty-eight million, forty-one thousand, seven hundred thirty-nine".