1944439998 has 8 divisors (see below), whose sum is σ = 3888880008. Its totient is φ = 648146664.

The previous prime is 1944439997. The next prime is 1944439999. The reversal of 1944439998 is 8999344491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1944439997) and next prime (1944439999).

It is a sphenic number, since it is the product of 3 distinct primes.

1944439998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944439997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162036661 + ... + 162036672.

It is an arithmetic number, because the mean of its divisors is an integer number (486110001).

Almost surely, 2^1944439998 is an apocalyptic number.

1944439998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1944439998 is a wasteful number, since it uses less digits than its factorization.

1944439998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324073338.

The product of its digits is 10077696, while the sum is 60.

The square root of 1944439998 is about 44095.8047664401. The cubic root of 1944439998 is about 1248.1444464732.

The spelling of 1944439998 in words is "one billion, nine hundred forty-four million, four hundred thirty-nine thousand, nine hundred ninety-eight".