16949145 has 16 divisors (see below), whose sum is σ = 27852480. Its totient is φ = 8794944.

The previous prime is 16949143. The next prime is 16949147. The reversal of 16949145 is 54194961.

It is an interprime number because it is at equal distance from previous prime (16949143) and next prime (16949147).

It is not a de Polignac number, because 16949145 - 2¹ = 16949143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16949143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14715 + ... + 15824.

It is an arithmetic number, because the mean of its divisors is an integer number (1740780).

Almost surely, 2^16949145 is an apocalyptic number.

16949145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16949145 is a deficient number, since it is larger than the sum of its proper divisors (10903335).

16949145 is a wasteful number, since it uses less digits than its factorization.

16949145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30584.

The product of its digits is 38880, while the sum is 39.

The square root of 16949145 is about 4116.9339319450. The cubic root of 16949145 is about 256.8715058635.

The spelling of 16949145 in words is "sixteen million, nine hundred forty-nine thousand, one hundred forty-five".