2430397991 has 24 divisors (see below), whose sum is σ = 2867065344. Its totient is φ = 2054006640.

The previous prime is 2430397967. The next prime is 2430397997. The reversal of 2430397991 is 1997930342.

It is a happy number.

It is not a de Polignac number, because 2430397991 - 2¹⁰ = 2430396967 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 (2430397997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326446 + ... + 1328276.

It is an arithmetic number, because the mean of its divisors is an integer number (119461056).

Almost surely, 2^2430397991 is an apocalyptic number.

2430397991 is a deficient number, since it is larger than the sum of its proper divisors (436667353).

2430397991 is a wasteful number, since it uses less digits than its factorization.

2430397991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211 (or 2204 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 2430397991 is about 49299.0668370102. The cubic root of 2430397991 is about 1344.4948174401.

The spelling of 2430397991 in words is "two billion, four hundred thirty million, three hundred ninety-seven thousand, nine hundred ninety-one".