19284390234 has 24 divisors (see below), whose sum is σ = 41879358612. Its totient is φ = 6413281920.

The previous prime is 19284390137. The next prime is 19284390239. The reversal of 19284390234 is 43209348291.

19284390234 is a `hidden beast` number, since 1 + 9 + 28 + 4 + 390 + 234 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18713419209 + 570971025 = 136797^2 + 23895^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19284390234.

It is not an unprimeable number, because it can be changed into a prime (19284390239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229337 + ... + 1244924.

Almost surely, 2^19284390234 is an apocalyptic number.

19284390234 is an abundant number, since it is smaller than the sum of its proper divisors (22594968378).

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

19284390234 is a wasteful number, since it uses less digits than its factorization.

19284390234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474702 (or 2474699 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 19284390234 in words is "nineteen billion, two hundred eighty-four million, three hundred ninety thousand, two hundred thirty-four".