19144690416 has 80 divisors (see below), whose sum is σ = 55772620800. Its totient is φ = 6286306752.

The previous prime is 19144690399. The next prime is 19144690421. The reversal of 19144690416 is 61409644191.

19144690416 is a `hidden beast` number, since 1 + 9 + 144 + 6 + 90 + 416 = 666.

It is a super-2 number, since 2×19144690416² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301776 + ... + 359663.

It is an arithmetic number, because the mean of its divisors is an integer number (697157760).

Almost surely, 2^19144690416 is an apocalyptic number.

19144690416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19144690416 is an abundant number, since it is smaller than the sum of its proper divisors (36627930384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19144690416 is a wasteful number, since it uses less digits than its factorization.

19144690416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661523 (or 661511 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 19144690416 in words is "nineteen billion, one hundred forty-four million, six hundred ninety thousand, four hundred sixteen".