16919419 has 16 divisors (see below), whose sum is σ = 18952416. Its totient is φ = 14976000.

The previous prime is 16919417. The next prime is 16919423. The reversal of 16919419 is 91491961.

It is a cyclic number.

It is not a de Polignac number, because 16919419 - 2¹ = 16919417 is a prime.

It is a super-2 number, since 2×16919419² = 572533478595122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16919417) 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, 107689 + ... + 107845.

It is an arithmetic number, because the mean of its divisors is an integer number (1184526).

Almost surely, 2^16919419 is an apocalyptic number.

16919419 is a deficient number, since it is larger than the sum of its proper divisors (2032997).

16919419 is a wasteful number, since it uses less digits than its factorization.

16919419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its digits is 17496, while the sum is 40.

The square root of 16919419 is about 4113.3221366676. The cubic root of 16919419 is about 256.7212479264.

The spelling of 16919419 in words is "sixteen million, nine hundred nineteen thousand, four hundred nineteen".