9019561340 has 24 divisors (see below), whose sum is σ = 18949133952. Its totient is φ = 3606290240.

The previous prime is 9019561333. The next prime is 9019561357. The reversal of 9019561340 is 431659109.

It is a junction number, because it is equal to n+sod(n) for n = 9019561294 and 9019561303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47084 + ... + 142323.

It is an arithmetic number, because the mean of its divisors is an integer number (789547248).

Almost surely, 2^9019561340 is an apocalyptic number.

It is an amenable number.

9019561340 is an abundant number, since it is smaller than the sum of its proper divisors (9929572612).

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

9019561340 is a wasteful number, since it uses less digits than its factorization.

9019561340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191797 (or 191795 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 9019561340 is about 94971.3711599448. The cubic root of 9019561340 is about 2081.5897409531.

The spelling of 9019561340 in words is "nine billion, nineteen million, five hundred sixty-one thousand, three hundred forty".