16381016 has 8 divisors (see below), whose sum is σ = 30714420. Its totient is φ = 8190504.

The previous prime is 16381007. The next prime is 16381033. The reversal of 16381016 is 61018361.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023806 + ... + 1023821.

Almost surely, 2^16381016 is an apocalyptic number.

It is an amenable number.

16381016 is a deficient number, since it is larger than the sum of its proper divisors (14333404).

16381016 is a wasteful number, since it uses less digits than its factorization.

16381016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047633 (or 2047629 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 16381016 is about 4047.3467852409. The cubic root of 16381016 is about 253.9687480925.

Adding to 16381016 its reverse (61018361), we get a palindrome (77399377).

The spelling of 16381016 in words is "sixteen million, three hundred eighty-one thousand, sixteen".