1938327782 has 4 divisors (see below), whose sum is σ = 2907491676. Its totient is φ = 969163890.

The previous prime is 1938327779. The next prime is 1938327821. The reversal of 1938327782 is 2877238391.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1938327782² = 7514229180946079048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1938327782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484581944 + ... + 484581947.

It is an arithmetic number, because the mean of its divisors is an integer number (726872919).

Almost surely, 2^1938327782 is an apocalyptic number.

1938327782 is a deficient number, since it is larger than the sum of its proper divisors (969163894).

1938327782 is an equidigital number, since it uses as much as digits as its factorization.

1938327782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969163893.

The product of its digits is 1016064, while the sum is 50.

The square root of 1938327782 is about 44026.4441216867. Note that the first 3 decimals coincide. The cubic root of 1938327782 is about 1246.8352544304.

The spelling of 1938327782 in words is "one billion, nine hundred thirty-eight million, three hundred twenty-seven thousand, seven hundred eighty-two".