2991849501 has 4 divisors (see below), whose sum is σ = 3989132672. Its totient is φ = 1994566332.

The previous prime is 2991849491. The next prime is 2991849503. The reversal of 2991849501 is 1059481992.

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 2991849501 - 2⁷ = 2991849373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991849503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498641581 + ... + 498641586.

It is an arithmetic number, because the mean of its divisors is an integer number (997283168).

Almost surely, 2^2991849501 is an apocalyptic number.

It is an amenable number.

2991849501 is a deficient number, since it is larger than the sum of its proper divisors (997283171).

2991849501 is an equidigital number, since it uses as much as digits as its factorization.

2991849501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997283170.

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 2991849501 is about 54697.8016103024. The cubic root of 2991849501 is about 1440.9422686092.

The spelling of 2991849501 in words is "two billion, nine hundred ninety-one million, eight hundred forty-nine thousand, five hundred one".