16475981 has 8 divisors (see below), whose sum is σ = 17262720. Its totient is φ = 15695152.

The previous prime is 16475971. The next prime is 16475993. The reversal of 16475981 is 18957461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16475981 is a prime.

It is a super-2 number, since 2×16475981² = 542915899824722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16475971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4856 + ... + 7518.

It is an arithmetic number, because the mean of its divisors is an integer number (2157840).

Almost surely, 2^16475981 is an apocalyptic number.

It is an amenable number.

16475981 is a deficient number, since it is larger than the sum of its proper divisors (786739).

16475981 is a wasteful number, since it uses less digits than its factorization.

16475981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955.

The product of its digits is 60480, while the sum is 41.

The square root of 16475981 is about 4059.0615910577. The cubic root of 16475981 is about 254.4585769959.

The spelling of 16475981 in words is "sixteen million, four hundred seventy-five thousand, nine hundred eighty-one".