2921012491 has 6 divisors (see below), whose sum is σ = 2962738076. Its totient is φ = 2879866500.

The previous prime is 2921012461. The next prime is 2921012513. The reversal of 2921012491 is 1942101292.

It is a happy number.

2921012491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2921012491 - 2⁵ = 2921012459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2921012431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284685 + ... + 294766.

Almost surely, 2^2921012491 is an apocalyptic number.

2921012491 is a deficient number, since it is larger than the sum of its proper divisors (41725585).

2921012491 is an frugal number, since it uses more digits than its factorization.

2921012491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579593 (or 579522 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2921012491 is about 54046.3920257403. The cubic root of 2921012491 is about 1429.4790824373.

The spelling of 2921012491 in words is "two billion, nine hundred twenty-one million, twelve thousand, four hundred ninety-one".