1939047768 has 256 divisors, whose sum is σ = 6515712000. Its totient is φ = 522547200.

The previous prime is 1939047763. The next prime is 1939047823. The reversal of 1939047768 is 8677409391.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939047763) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1921248 + ... + 1922256.

It is an arithmetic number, because the mean of its divisors is an integer number (25452000).

Almost surely, 2^1939047768 is an apocalyptic number.

1939047768 is a gapful number since it is divisible by the number (18) 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 1939047768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3257856000).

1939047768 is an abundant number, since it is smaller than the sum of its proper divisors (4576664232).

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

1939047768 is a wasteful number, since it uses less digits than its factorization.

1939047768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1939047768 is about 44034.6201073655. The cubic root of 1939047768 is about 1246.9896130497.

The spelling of 1939047768 in words is "one billion, nine hundred thirty-nine million, forty-seven thousand, seven hundred sixty-eight".