16981103 has 2 divisors, whose sum is σ = 16981104. Its totient is φ = 16981102.

The previous prime is 16981073. The next prime is 16981109. The reversal of 16981103 is 30118961.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30118961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16981103 - 2²² = 12786799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16981109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8490551 + 8490552.

It is an arithmetic number, because the mean of its divisors is an integer number (8490552).

Almost surely, 2^16981103 is an apocalyptic number.

16981103 is a deficient number, since it is larger than the sum of its proper divisors (1).

16981103 is an equidigital number, since it uses as much as digits as its factorization.

16981103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 16981103 is about 4120.8133905820. The cubic root of 16981103 is about 257.0328501968.

The spelling of 16981103 in words is "sixteen million, nine hundred eighty-one thousand, one hundred three".