16601851938 has 32 divisors (see below), whose sum is σ = 38872632960. Its totient is φ = 4627693440.

The previous prime is 16601851933. The next prime is 16601851943. The reversal of 16601851938 is 83915810661.

It is an interprime number because it is at equal distance from previous prime (16601851933) and next prime (16601851943).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16601851933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4818793 + ... + 4822236.

It is an arithmetic number, because the mean of its divisors is an integer number (1214769780).

Almost surely, 2^16601851938 is an apocalyptic number.

16601851938 is an abundant number, since it is smaller than the sum of its proper divisors (22270781022).

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

16601851938 is a wasteful number, since it uses less digits than its factorization.

16601851938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9641082.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 16601851938 in words is "sixteen billion, six hundred one million, eight hundred fifty-one thousand, nine hundred thirty-eight".