1944724097 has 4 divisors (see below), whose sum is σ = 1944869076. Its totient is φ = 1944579120.

The previous prime is 1944724073. The next prime is 1944724109. The reversal of 1944724097 is 7904274491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197149681 + 1747574416 = 14041^2 + 41804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1944724097 - 2²⁰ = 1943675521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1944724007) 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, 50054 + ... + 79967.

It is an arithmetic number, because the mean of its divisors is an integer number (486217269).

Almost surely, 2^1944724097 is an apocalyptic number.

It is an amenable number.

1944724097 is a deficient number, since it is larger than the sum of its proper divisors (144979).

1944724097 is a wasteful number, since it uses less digits than its factorization.

1944724097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144978.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 1944724097 is about 44099.0260323287. The cubic root of 1944724097 is about 1248.2052316386.

The spelling of 1944724097 in words is "one billion, nine hundred forty-four million, seven hundred twenty-four thousand, ninety-seven".