1939849344 has 128 divisors (see below), whose sum is σ = 5744232000. Its totient is φ = 644474880.

The previous prime is 1939849321. The next prime is 1939849361. The reversal of 1939849344 is 4439489391.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a nude number because it is divisible by every one of its digits.

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, 1309084 + ... + 1310564.

Almost surely, 2^1939849344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1939849344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872116000).

1939849344 is an abundant number, since it is smaller than the sum of its proper divisors (3804382656).

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

1939849344 is a wasteful number, since it uses less digits than its factorization.

1939849344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1865 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 1939849344 is about 44043.7208237451. The cubic root of 1939849344 is about 1247.1614188986.

The spelling of 1939849344 in words is "one billion, nine hundred thirty-nine million, eight hundred forty-nine thousand, three hundred forty-four".