1915397682 has 128 divisors (see below), whose sum is σ = 4456857600. Its totient is φ = 543456000.

The previous prime is 1915397663. The next prime is 1915397689. The reversal of 1915397682 is 2867935191.

Its product of digits (816480) is a multiple of the sum of its prime divisors (360).

It is not an unprimeable number, because it can be changed into a prime (1915397689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12854944 + ... + 12855092.

It is an arithmetic number, because the mean of its divisors is an integer number (34819200).

Almost surely, 2^1915397682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1915397682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2228428800).

1915397682 is an abundant number, since it is smaller than the sum of its proper divisors (2541459918).

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

1915397682 is a wasteful number, since it uses less digits than its factorization.

1915397682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its digits is 816480, while the sum is 51.

The square root of 1915397682 is about 43765.2565627119. The cubic root of 1915397682 is about 1241.8991194924.

The spelling of 1915397682 in words is "one billion, nine hundred fifteen million, three hundred ninety-seven thousand, six hundred eighty-two".