19098942156 has 192 divisors, whose sum is σ = 57759206400. Its totient is φ = 5344745472.

The previous prime is 19098942127. The next prime is 19098942173. The reversal of 19098942156 is 65124989091.

19098942156 is a `hidden beast` number, since 1 + 90 + 9 + 89 + 421 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 63 ways as a sum of consecutive naturals, for example, 15744606 + ... + 15745818.

It is an arithmetic number, because the mean of its divisors is an integer number (300829200).

Almost surely, 2^19098942156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19098942156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28879603200).

19098942156 is an abundant number, since it is smaller than the sum of its proper divisors (38660264244).

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

19098942156 is a wasteful number, since it uses less digits than its factorization.

19098942156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 19098942156 in words is "nineteen billion, ninety-eight million, nine hundred forty-two thousand, one hundred fifty-six".