16945016919 has 16 divisors (see below), whose sum is σ = 23362667520. Its totient is φ = 10913287680.

The previous prime is 16945016911. The next prime is 16945016927. The reversal of 16945016919 is 91961054961.

It is an interprime number because it is at equal distance from previous prime (16945016911) and next prime (16945016927).

It is not a de Polignac number, because 16945016919 - 2³ = 16945016911 is a prime.

It is a super-2 number, since 2×16945016919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16945016911) 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, 104229 + ... + 211550.

It is an arithmetic number, because the mean of its divisors is an integer number (1460166720).

Almost surely, 2^16945016919 is an apocalyptic number.

16945016919 is a deficient number, since it is larger than the sum of its proper divisors (6417650601).

16945016919 is a wasteful number, since it uses less digits than its factorization.

16945016919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316390.

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 16945016919 in words is "sixteen billion, nine hundred forty-five million, sixteen thousand, nine hundred nineteen".