1945019112 has 64 divisors (see below), whose sum is σ = 5094451200. Its totient is φ = 618045120.

The previous prime is 1945019101. The next prime is 1945019123. The reversal of 1945019112 is 2119105491.

It is an interprime number because it is at equal distance from previous prime (1945019101) and next prime (1945019123).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30339 + ... + 69357.

It is an arithmetic number, because the mean of its divisors is an integer number (79600800).

Almost surely, 2^1945019112 is an apocalyptic number.

1945019112 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 1945019112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2547225600).

1945019112 is an abundant number, since it is smaller than the sum of its proper divisors (3149432088).

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

1945019112 is a wasteful number, since it uses less digits than its factorization.

1945019112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39126 (or 39122 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1945019112 is about 44102.3708206260. The cubic root of 1945019112 is about 1248.2683461009.

The spelling of 1945019112 in words is "one billion, nine hundred forty-five million, nineteen thousand, one hundred twelve".