1912309020 has 96 divisors (see below), whose sum is σ = 5993064000. Its totient is φ = 506207232.

The previous prime is 1912309001. The next prime is 1912309043. The reversal of 1912309020 is 209032191.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61056 + ... + 86904.

It is an arithmetic number, because the mean of its divisors is an integer number (62427750).

Almost surely, 2^1912309020 is an apocalyptic number.

1912309020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1912309020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2996532000).

1912309020 is an abundant number, since it is smaller than the sum of its proper divisors (4080754980).

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

1912309020 is a wasteful number, since it uses less digits than its factorization.

1912309020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26004 (or 25996 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1912309020 is about 43729.9556368401. The cubic root of 1912309020 is about 1241.2312215923.

The spelling of 1912309020 in words is "one billion, nine hundred twelve million, three hundred nine thousand, twenty".