1915328020 has 48 divisors (see below), whose sum is σ = 4175232768. Its totient is φ = 737516160.

The previous prime is 1915328017. The next prime is 1915328029. The reversal of 1915328020 is 208235191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915328029) 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 15 ways as a sum of consecutive naturals, for example, 40639 + ... + 74041.

It is an arithmetic number, because the mean of its divisors is an integer number (86984016).

Almost surely, 2^1915328020 is an apocalyptic number.

1915328020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1915328020 is an abundant number, since it is smaller than the sum of its proper divisors (2259904748).

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

1915328020 is a wasteful number, since it uses less digits than its factorization.

1915328020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520 (or 33518 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1915328020 is about 43764.4606958660. The cubic root of 1915328020 is about 1241.8840635720.

The spelling of 1915328020 in words is "one billion, nine hundred fifteen million, three hundred twenty-eight thousand, twenty".