2988257391 has 24 divisors (see below), whose sum is σ = 4953661440. Its totient is φ = 1700422416.

The previous prime is 2988257347. The next prime is 2988257423. The reversal of 2988257391 is 1937528892.

2988257391 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 2988257391 - 2¹⁷ = 2988126319 is a prime.

It is a super-2 number, since 2×2988257391² = 17859364469732253762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2988257191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84175 + ... + 114288.

It is an arithmetic number, because the mean of its divisors is an integer number (206402560).

Almost surely, 2^2988257391 is an apocalyptic number.

2988257391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2988257391 is a deficient number, since it is larger than the sum of its proper divisors (1965404049).

2988257391 is a wasteful number, since it uses less digits than its factorization.

2988257391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198715 (or 198712 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 2988257391 is about 54664.9557852195. The cubic root of 2988257391 is about 1440.3653572357.

The spelling of 2988257391 in words is "two billion, nine hundred eighty-eight million, two hundred fifty-seven thousand, three hundred ninety-one".