1973439956 has 24 divisors (see below), whose sum is σ = 3476620224. Its totient is φ = 980138880.

The previous prime is 1973439953. The next prime is 1973439967. The reversal of 1973439956 is 6599343791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973439953) 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, 498521 + ... + 502463.

It is an arithmetic number, because the mean of its divisors is an integer number (144859176).

Almost surely, 2^1973439956 is an apocalyptic number.

It is an amenable number.

1973439956 is a deficient number, since it is larger than the sum of its proper divisors (1503180268).

1973439956 is a wasteful number, since it uses less digits than its factorization.

1973439956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751 (or 4749 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 56.

The square root of 1973439956 is about 44423.4167528793. The cubic root of 1973439956 is about 1254.3189176539.

The spelling of 1973439956 in words is "one billion, nine hundred seventy-three million, four hundred thirty-nine thousand, nine hundred fifty-six".