16949538 has 12 divisors (see below), whose sum is σ = 36724038. Its totient is φ = 5649840.

The previous prime is 16949509. The next prime is 16949573. The reversal of 16949538 is 83594961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16426809 + 522729 = 4053^2 + 723^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16949493 and 16949502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 470803 + ... + 470838.

Almost surely, 2^16949538 is an apocalyptic number.

16949538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16949538 is an abundant number, since it is smaller than the sum of its proper divisors (19774500).

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

16949538 is a wasteful number, since it uses less digits than its factorization.

16949538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941649 (or 941646 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 16949538 is about 4116.9816613631. The cubic root of 16949538 is about 256.8734912089.

It can be divided in two parts, 1694953 and 8, that added together give a palindrome (1694961).

The spelling of 16949538 in words is "sixteen million, nine hundred forty-nine thousand, five hundred thirty-eight".