1973129444 has 48 divisors (see below), whose sum is σ = 4068743616. Its totient is φ = 825417600.

The previous prime is 1973129443. The next prime is 1973129471. The reversal of 1973129444 is 4449213791.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 1973129395 and 1973129404.

It is not an unprimeable number, because it can be changed into a prime (1973129443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193514 + ... + 203454.

It is an arithmetic number, because the mean of its divisors is an integer number (84765492).

Almost surely, 2^1973129444 is an apocalyptic number.

It is an amenable number.

1973129444 is an abundant number, since it is smaller than the sum of its proper divisors (2095614172).

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

1973129444 is a wasteful number, since it uses less digits than its factorization.

1973129444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316 (or 10314 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 1973129444 is about 44419.9217018671. The cubic root of 1973129444 is about 1254.2531270355.

The spelling of 1973129444 in words is "one billion, nine hundred seventy-three million, one hundred twenty-nine thousand, four hundred forty-four".