16416491 has 12 divisors (see below), whose sum is σ = 20317392. Its totient is φ = 12987936.

The previous prime is 16416473. The next prime is 16416511. The reversal of 16416491 is 19461461.

It is a happy number.

It is not a de Polignac number, because 16416491 - 2¹⁰ = 16415467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16416431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5756 + ... + 8121.

It is an arithmetic number, because the mean of its divisors is an integer number (1693116).

Almost surely, 2^16416491 is an apocalyptic number.

16416491 is a deficient number, since it is larger than the sum of its proper divisors (3900901).

16416491 is a wasteful number, since it uses less digits than its factorization.

16416491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13910 (or 13897 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 16416491 is about 4051.7269157731. The cubic root of 16416491 is about 254.1519488865.

The spelling of 16416491 in words is "sixteen million, four hundred sixteen thousand, four hundred ninety-one".