16802149 has 18 divisors (see below), whose sum is σ = 21174930. Its totient is φ = 13287456.

The previous prime is 16802147. The next prime is 16802161. The reversal of 16802149 is 94120861.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1979649 + 14822500 = 1407^2 + 3850^2 .

It is not a de Polignac number, because 16802149 - 2¹ = 16802147 is a prime.

It is a super-2 number, since 2×16802149² = 564624422036402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16802149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16802143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7267 + ... + 9295.

It is an arithmetic number, because the mean of its divisors is an integer number (1176385).

Almost surely, 2^16802149 is an apocalyptic number.

It is an amenable number.

16802149 is a deficient number, since it is larger than the sum of its proper divisors (4372781).

16802149 is a wasteful number, since it uses less digits than its factorization.

16802149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 16802149 is about 4099.0424491581. The cubic root of 16802149 is about 256.1267530264.

The spelling of 16802149 in words is "sixteen million, eight hundred two thousand, one hundred forty-nine".