1972384559 has 4 divisors (see below), whose sum is σ = 2009599416. Its totient is φ = 1935169704.

The previous prime is 1972384529. The next prime is 1972384571. The reversal of 1972384559 is 9554832791.

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

It is a cyclic number.

It is not a de Polignac number, because 1972384559 - 2⁸ = 1972384303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 37214803 = 1972384559 / (1 + 9 + 7 + 2 + 3 + 8 + 4 + 5 + 5 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1972384559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972384529) 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, 18607349 + ... + 18607454.

It is an arithmetic number, because the mean of its divisors is an integer number (502399854).

Almost surely, 2^1972384559 is an apocalyptic number.

1972384559 is a deficient number, since it is larger than the sum of its proper divisors (37214857).

1972384559 is an equidigital number, since it uses as much as digits as its factorization.

1972384559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37214856.

The product of its digits is 2721600, while the sum is 53.

The square root of 1972384559 is about 44411.5363278507. The cubic root of 1972384559 is about 1254.0952742507.

The spelling of 1972384559 in words is "one billion, nine hundred seventy-two million, three hundred eighty-four thousand, five hundred fifty-nine".