1934228778 has 8 divisors (see below), whose sum is σ = 3868457568. Its totient is φ = 644742924.

The previous prime is 1934228773. The next prime is 1934228819. The reversal of 1934228778 is 8778224391.

It is a sphenic number, since it is the product of 3 distinct primes.

1934228778 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1934228778.

It is not an unprimeable number, because it can be changed into a prime (1934228773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161185726 + ... + 161185737.

It is an arithmetic number, because the mean of its divisors is an integer number (483557196).

Almost surely, 2^1934228778 is an apocalyptic number.

1934228778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1934228778 is a wasteful number, since it uses less digits than its factorization.

1934228778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322371468.

The product of its digits is 1354752, while the sum is 51.

The square root of 1934228778 is about 43979.8678715614. The cubic root of 1934228778 is about 1245.9557352229.

The spelling of 1934228778 in words is "one billion, nine hundred thirty-four million, two hundred twenty-eight thousand, seven hundred seventy-eight".