19826134880 has 48 divisors (see below), whose sum is σ = 46853677584. Its totient is φ = 7928010240.

The previous prime is 19826134837. The next prime is 19826134921. The reversal of 19826134880 is 8843162891.

It is a super-2 number, since 2×19826134880² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555659 + ... + 590261.

It is an arithmetic number, because the mean of its divisors is an integer number (976118283).

Almost surely, 2^19826134880 is an apocalyptic number.

19826134880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19826134880 is an abundant number, since it is smaller than the sum of its proper divisors (27027542704).

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

19826134880 is a wasteful number, since it uses less digits than its factorization.

19826134880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38199 (or 38191 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 19826134880 in words is "nineteen billion, eight hundred twenty-six million, one hundred thirty-four thousand, eight hundred eighty".