1972081208 has 8 divisors (see below), whose sum is σ = 3697652280. Its totient is φ = 986040600.

The previous prime is 1972081183. The next prime is 1972081211. The reversal of 1972081208 is 8021802791.

It is a tau number, because it is divible by the number of its divisors (8).

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, 123255068 + ... + 123255083.

It is an arithmetic number, because the mean of its divisors is an integer number (462206535).

Almost surely, 2^1972081208 is an apocalyptic number.

It is an amenable number.

1972081208 is a deficient number, since it is larger than the sum of its proper divisors (1725571072).

1972081208 is a wasteful number, since it uses less digits than its factorization.

1972081208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246510157 (or 246510153 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 1972081208 is about 44408.1209690300. The cubic root of 1972081208 is about 1254.0309780398.

Adding to 1972081208 its reverse (8021802791), we get a palindrome (9993883999).

The spelling of 1972081208 in words is "one billion, nine hundred seventy-two million, eighty-one thousand, two hundred eight".