1944799997 has 8 divisors (see below), whose sum is σ = 2223498816. Its totient is φ = 1666318752.

The previous prime is 1944799963. The next prime is 1944800021. The reversal of 1944799997 is 7999974491.

It is a happy number.

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

It is not a de Polignac number, because 1944799997 - 2⁶ = 1944799933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944799907) 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, 34763 + ... + 71400.

It is an arithmetic number, because the mean of its divisors is an integer number (277937352).

Almost surely, 2^1944799997 is an apocalyptic number.

It is an amenable number.

1944799997 is a deficient number, since it is larger than the sum of its proper divisors (278698819).

1944799997 is a wasteful number, since it uses less digits than its factorization.

1944799997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108787.

The product of its digits is 46294416, while the sum is 68.

The square root of 1944799997 is about 44099.8865871558. The cubic root of 1944799997 is about 1248.2214700251.

The spelling of 1944799997 in words is "one billion, nine hundred forty-four million, seven hundred ninety-nine thousand, nine hundred ninety-seven".