1973221072 has 10 divisors (see below), whose sum is σ = 3823115858. Its totient is φ = 986610528.

The previous prime is 1973221067. The next prime is 1973221091. The reversal of 1973221072 is 2701223791.

It can be written as a sum of positive squares in only one way, i.e., 1396068496 + 577152576 = 37364^2 + 24024^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61663143 + ... + 61663174.

Almost surely, 2^1973221072 is an apocalyptic number.

It is an amenable number.

1973221072 is a deficient number, since it is larger than the sum of its proper divisors (1849894786).

1973221072 is a wasteful number, since it uses less digits than its factorization.

1973221072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123326325 (or 123326319 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 1973221072 is about 44420.9530739717. The cubic root of 1973221072 is about 1254.2725416980.

It can be divided in two parts, 19732 and 21072, that added together give a palindrome (40804).

The spelling of 1973221072 in words is "one billion, nine hundred seventy-three million, two hundred twenty-one thousand, seventy-two".