16538955 has 16 divisors (see below), whose sum is σ = 27613440. Its totient is φ = 8437088.

The previous prime is 16538947. The next prime is 16538957. The reversal of 16538955 is 55983561.

It is a cyclic number.

It is not a de Polignac number, because 16538955 - 2³ = 16538947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16538957) 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, 23625 + ... + 24314.

It is an arithmetic number, because the mean of its divisors is an integer number (1725840).

Almost surely, 2^16538955 is an apocalyptic number.

16538955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16538955 is a deficient number, since it is larger than the sum of its proper divisors (11074485).

16538955 is a wasteful number, since it uses less digits than its factorization.

16538955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47970.

The product of its digits is 162000, while the sum is 42.

The square root of 16538955 is about 4066.8114045281. The cubic root of 16538955 is about 254.7823594733.

The spelling of 16538955 in words is "sixteen million, five hundred thirty-eight thousand, nine hundred fifty-five".