1942378816 has 112 divisors (see below), whose sum is σ = 4732528000. Its totient is φ = 788465664.

The previous prime is 1942378807. The next prime is 1942378847. The reversal of 1942378816 is 6188732491.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 1942378816.

It is a congruent number.

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, 414760 + ... + 419416.

Almost surely, 2^1942378816 is an apocalyptic number.

1942378816 is a gapful number since it is divisible by the number (16) 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 1942378816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2366264000).

1942378816 is an abundant number, since it is smaller than the sum of its proper divisors (2790149184).

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

1942378816 is an equidigital number, since it uses as much as digits as its factorization.

1942378816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709 (or 4685 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 1942378816 is about 44072.4269356703. The cubic root of 1942378816 is about 1247.7032633318.

The spelling of 1942378816 in words is "one billion, nine hundred forty-two million, three hundred seventy-eight thousand, eight hundred sixteen".