10019185956 has 108 divisors (see below), whose sum is σ = 27642381312. Its totient is φ = 3058316352.

The previous prime is 10019185951. The next prime is 10019185973. The reversal of 10019185956 is 65958191001.

It is not an unprimeable number, because it can be changed into a prime (10019185951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 766185 + ... + 779151.

Almost surely, 2^10019185956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10019185956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13821190656).

10019185956 is an abundant number, since it is smaller than the sum of its proper divisors (17623195356).

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

10019185956 is a wasteful number, since it uses less digits than its factorization.

10019185956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13130 (or 13112 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 45.

The spelling of 10019185956 in words is "ten billion, nineteen million, one hundred eighty-five thousand, nine hundred fifty-six".