19151342800 has 30 divisors (see below), whose sum is σ = 46011102038. Its totient is φ = 7660536960.

The previous prime is 19151342797. The next prime is 19151342807. The reversal of 19151342800 is 824315191.

It can be written as a sum of positive squares in 3 ways, for example, as 3364928064 + 15786414736 = 58008^2 + 125644^2 .

It is a super-2 number, since 2×19151342800² (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 (19151342807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23938779 + ... + 23939578.

Almost surely, 2^19151342800 is an apocalyptic number.

19151342800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19151342800 is an abundant number, since it is smaller than the sum of its proper divisors (26859759238).

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

19151342800 is a wasteful number, since it uses less digits than its factorization.

19151342800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47878375 (or 47878364 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

Adding to 19151342800 its reverse (824315191), we get a palindrome (19975657991).

The spelling of 19151342800 in words is "nineteen billion, one hundred fifty-one million, three hundred forty-two thousand, eight hundred".