19624942086 has 72 divisors (see below), whose sum is σ = 42693677064. Its totient is φ = 6012679680.

The previous prime is 19624942049. The next prime is 19624942087. The reversal of 19624942086 is 68024942691.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19624942087) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3203106 + ... + 3209226.

It is an arithmetic number, because the mean of its divisors is an integer number (592967737).

Almost surely, 2^19624942086 is an apocalyptic number.

19624942086 is an abundant number, since it is smaller than the sum of its proper divisors (23068734978).

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

19624942086 is a wasteful number, since it uses less digits than its factorization.

19624942086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246 (or 6186 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 19624942086 in words is "nineteen billion, six hundred twenty-four million, nine hundred forty-two thousand, eighty-six".