2990942491 has 4 divisors (see below), whose sum is σ = 2991129112. Its totient is φ = 2990755872.

The previous prime is 2990942477. The next prime is 2990942501. The reversal of 2990942491 is 1942490992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2990942491 - 2¹¹ = 2990940443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2990942891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66750 + ... + 102163.

It is an arithmetic number, because the mean of its divisors is an integer number (747782278).

Almost surely, 2^2990942491 is an apocalyptic number.

2990942491 is a deficient number, since it is larger than the sum of its proper divisors (186621).

2990942491 is a wasteful number, since it uses less digits than its factorization.

2990942491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186620.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 2990942491 is about 54689.5098807806. The cubic root of 2990942491 is about 1440.7966417274.

The spelling of 2990942491 in words is "two billion, nine hundred ninety million, nine hundred forty-two thousand, four hundred ninety-one".