1972159282 has 4 divisors (see below), whose sum is σ = 2958238926. Its totient is φ = 986079640.

The previous prime is 1972159253. The next prime is 1972159289. The reversal of 1972159282 is 2829512791.

It is a Cunningham number, because it is equal to 44409²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 1972159281 + 1 = 44409^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (1972159289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493039819 + ... + 493039822.

Almost surely, 2^1972159282 is an apocalyptic number.

1972159282 is a deficient number, since it is larger than the sum of its proper divisors (986079644).

1972159282 is an equidigital number, since it uses as much as digits as its factorization.

1972159282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986079643.

The product of its digits is 181440, while the sum is 46.

The square root of 1972159282 is about 44409.0000112590. Note that the first 4 decimals coincide. The cubic root of 1972159282 is about 1254.0475267029.

It can be divided in two parts, 19721 and 59282, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 1972159282 in words is "one billion, nine hundred seventy-two million, one hundred fifty-nine thousand, two hundred eighty-two".