19210763140 has 24 divisors (see below), whose sum is σ = 40443224472. Its totient is φ = 7665139200.

The previous prime is 19210763111. The next prime is 19210763149. The reversal of 19210763140 is 4136701291.

It can be written as a sum of positive squares in 4 ways, for example, as 3599760004 + 15611003136 = 59998^2 + 124944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19210763096 and 19210763105.

It is not an unprimeable number, because it can be changed into a prime (19210763149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1189659 + ... + 1205698.

It is an arithmetic number, because the mean of its divisors is an integer number (1685134353).

Almost surely, 2^19210763140 is an apocalyptic number.

19210763140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19210763140 is an abundant number, since it is smaller than the sum of its proper divisors (21232461332).

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

19210763140 is a wasteful number, since it uses less digits than its factorization.

19210763140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395767 (or 2395765 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 19210763140 in words is "nineteen billion, two hundred ten million, seven hundred sixty-three thousand, one hundred forty".