16199145 has 12 divisors (see below), whose sum is σ = 28078596. Its totient is φ = 8639520.

The previous prime is 16199137. The next prime is 16199171. The reversal of 16199145 is 54199161.

It can be written as a sum of positive squares in 2 ways, for example, as 10323369 + 5875776 = 3213^2 + 2424^2 .

It is not a de Polignac number, because 16199145 - 2³ = 16199137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179946 + ... + 180035.

It is an arithmetic number, because the mean of its divisors is an integer number (2339883).

Almost surely, 2^16199145 is an apocalyptic number.

16199145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16199145 is a deficient number, since it is larger than the sum of its proper divisors (11879451).

16199145 is a wasteful number, since it uses less digits than its factorization.

16199145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359992 (or 359989 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 16199145 is about 4024.8161448692. The cubic root of 16199145 is about 253.0253480620.

The spelling of 16199145 in words is "sixteen million, one hundred ninety-nine thousand, one hundred forty-five".