1972002791 has 8 divisors (see below), whose sum is σ = 2152545024. Its totient is φ = 1791672120.

The previous prime is 1972002763. The next prime is 1972002827.

1972002791 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 1972002791 - 2²² = 1967808487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972002701) 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, 33071 + ... + 70976.

It is an arithmetic number, because the mean of its divisors is an integer number (269068128).

Almost surely, 2^1972002791 is an apocalyptic number.

1972002791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1972002791 is a deficient number, since it is larger than the sum of its proper divisors (180542233).

1972002791 is a wasteful number, since it uses less digits than its factorization.

1972002791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105781.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 1972002791 is about 44407.2380474175. The cubic root of 1972002791 is about 1254.0143562343.

It can be divided in two parts, 197200 and 2791, that added together give a palindrome (199991).

The spelling of 1972002791 in words is "one billion, nine hundred seventy-two million, two thousand, seven hundred ninety-one".