1917738912 has 96 divisors (see below), whose sum is σ = 5227649280. Its totient is φ = 614835200.

The previous prime is 1917738899. The next prime is 1917738917. The reversal of 1917738912 is 2198377191.

1917738912 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1917738917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814537 + ... + 816887.

It is an arithmetic number, because the mean of its divisors is an integer number (54454680).

Almost surely, 2^1917738912 is an apocalyptic number.

1917738912 is a gapful number since it is divisible by the number (12) 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 1917738912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613824640).

1917738912 is an abundant number, since it is smaller than the sum of its proper divisors (3309910368).

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

1917738912 is a wasteful number, since it uses less digits than its factorization.

1917738912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686 (or 2678 counting only the distinct ones).

The product of its digits is 190512, while the sum is 48.

The square root of 1917738912 is about 43791.9959810009. The cubic root of 1917738912 is about 1242.4049130838.

The spelling of 1917738912 in words is "one billion, nine hundred seventeen million, seven hundred thirty-eight thousand, nine hundred twelve".