2598378971 has 4 divisors (see below), whose sum is σ = 2598511944. Its totient is φ = 2598246000.

The previous prime is 2598378961. The next prime is 2598378989. The reversal of 2598378971 is 1798738952.

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 2598378971 - 2⁶ = 2598378907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2598378971.

It is not an unprimeable number, because it can be changed into a prime (2598378961) 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 3 ways as a sum of consecutive naturals, for example, 30785 + ... + 78386.

It is an arithmetic number, because the mean of its divisors is an integer number (649627986).

Almost surely, 2^2598378971 is an apocalyptic number.

2598378971 is a deficient number, since it is larger than the sum of its proper divisors (132973).

2598378971 is a wasteful number, since it uses less digits than its factorization.

2598378971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132972.

The product of its digits is 7620480, while the sum is 59.

The square root of 2598378971 is about 50974.2971604317. The cubic root of 2598378971 is about 1374.7830350335.

The spelling of 2598378971 in words is "two billion, five hundred ninety-eight million, three hundred seventy-eight thousand, nine hundred seventy-one".