1913082906 has 128 divisors (see below), whose sum is σ = 4727808000. Its totient is φ = 503976384.

The previous prime is 1913082901. The next prime is 1913082911. The reversal of 1913082906 is 6092803191.

It is an interprime number because it is at equal distance from previous prime (1913082901) and next prime (1913082911).

It is not an unprimeable number, because it can be changed into a prime (1913082901) 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 63 ways as a sum of consecutive naturals, for example, 8427565 + ... + 8427791.

It is an arithmetic number, because the mean of its divisors is an integer number (36936000).

Almost surely, 2^1913082906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913082906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363904000).

1913082906 is an abundant number, since it is smaller than the sum of its proper divisors (2814725094).

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

1913082906 is a wasteful number, since it uses less digits than its factorization.

1913082906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1913082906 is about 43738.8032072209. The cubic root of 1913082906 is about 1241.3986355942.

The spelling of 1913082906 in words is "one billion, nine hundred thirteen million, eighty-two thousand, nine hundred six".