1972960777 has 8 divisors (see below), whose sum is σ = 1993140864. Its totient is φ = 1952800608.

The previous prime is 1972960763. The next prime is 1972960793. The reversal of 1972960777 is 7770692791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1972960777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972961777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270693 + ... + 277885.

It is an arithmetic number, because the mean of its divisors is an integer number (249142608).

Almost surely, 2^1972960777 is an apocalyptic number.

It is an amenable number.

1972960777 is a deficient number, since it is larger than the sum of its proper divisors (20180087).

1972960777 is a wasteful number, since it uses less digits than its factorization.

1972960777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959.

The product of its (nonzero) digits is 2333772, while the sum is 55.

The square root of 1972960777 is about 44418.0231099944. The cubic root of 1972960777 is about 1254.2173873393.

The spelling of 1972960777 in words is "one billion, nine hundred seventy-two million, nine hundred sixty thousand, seven hundred seventy-seven".