1973646433 has 8 divisors (see below), whose sum is σ = 2279720160. Its totient is φ = 1688681280.

The previous prime is 1973646431. The next prime is 1973646461. The reversal of 1973646433 is 3346463791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1973646433 - 2¹ = 1973646431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1973646431) 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, 5276943 + ... + 5277316.

It is an arithmetic number, because the mean of its divisors is an integer number (284965020).

Almost surely, 2^1973646433 is an apocalyptic number.

It is an amenable number.

1973646433 is a deficient number, since it is larger than the sum of its proper divisors (306073727).

1973646433 is a wasteful number, since it uses less digits than its factorization.

1973646433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554287.

The product of its digits is 979776, while the sum is 46.

The square root of 1973646433 is about 44425.7406578664. The cubic root of 1973646433 is about 1254.3626617388.

The spelling of 1973646433 in words is "one billion, nine hundred seventy-three million, six hundred forty-six thousand, four hundred thirty-three".