1944451332 has 60 divisors (see below), whose sum is σ = 5147591680. Its totient is φ = 639937584.

The previous prime is 1944451309. The next prime is 1944451337. The reversal of 1944451332 is 2331544491.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1944451337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12388 + ... + 63579.

Almost surely, 2^1944451332 is an apocalyptic number.

1944451332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1944451332 is an abundant number, since it is smaller than the sum of its proper divisors (3203140348).

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

1944451332 is a wasteful number, since it uses less digits than its factorization.

1944451332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76062 (or 76051 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1944451332 is about 44095.9332818799. The cubic root of 1944451332 is about 1248.1468715830.

The spelling of 1944451332 in words is "one billion, nine hundred forty-four million, four hundred fifty-one thousand, three hundred thirty-two".