2791973901 has 4 divisors (see below), whose sum is σ = 3722631872. Its totient is φ = 1861315932.

The previous prime is 2791973897. The next prime is 2791973917. The reversal of 2791973901 is 1093791972.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2791973901 - 2² = 2791973897 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 (2791973501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465328981 + ... + 465328986.

It is an arithmetic number, because the mean of its divisors is an integer number (930657968).

Almost surely, 2^2791973901 is an apocalyptic number.

It is an amenable number.

2791973901 is a deficient number, since it is larger than the sum of its proper divisors (930657971).

2791973901 is an equidigital number, since it uses as much as digits as its factorization.

2791973901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930657970.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 2791973901 is about 52839.1322884848. The cubic root of 2791973901 is about 1408.1117357427. Note that the first 3 decimals are identical.

The spelling of 2791973901 in words is "two billion, seven hundred ninety-one million, nine hundred seventy-three thousand, nine hundred one".