1939944432 has 40 divisors (see below), whose sum is σ = 5013786240. Its totient is φ = 646356160.

The previous prime is 1939944427. The next prime is 1939944439. The reversal of 1939944432 is 2344499391.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939944439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115957 + ... + 131627.

It is an arithmetic number, because the mean of its divisors is an integer number (125344656).

Almost surely, 2^1939944432 is an apocalyptic number.

1939944432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1939944432 is an abundant number, since it is smaller than the sum of its proper divisors (3073841808).

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

1939944432 is a wasteful number, since it uses less digits than its factorization.

1939944432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18261 (or 18255 counting only the distinct ones).

The product of its digits is 839808, while the sum is 48.

The square root of 1939944432 is about 44044.8002833479. The cubic root of 1939944432 is about 1247.1817964514.

The spelling of 1939944432 in words is "one billion, nine hundred thirty-nine million, nine hundred forty-four thousand, four hundred thirty-two".