19236426100 has 36 divisors (see below), whose sum is σ = 41749101324. Its totient is φ = 7693454080.

The previous prime is 19236426061. The next prime is 19236426107. The reversal of 19236426100 is 162463291.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 67469796 + 19168956304 = 8214^2 + 138452^2 .

It is a super-2 number, since 2×19236426100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19236426107) 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, 1233552 + ... + 1249048.

It is an arithmetic number, because the mean of its divisors is an integer number (1159697259).

Almost surely, 2^19236426100 is an apocalyptic number.

19236426100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19236426100 is an abundant number, since it is smaller than the sum of its proper divisors (22512675224).

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

19236426100 is a wasteful number, since it uses less digits than its factorization.

19236426100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27924 (or 27917 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

Adding to 19236426100 its reverse (162463291), we get a palindrome (19398889391).

The spelling of 19236426100 in words is "nineteen billion, two hundred thirty-six million, four hundred twenty-six thousand, one hundred".