2597117898 has 8 divisors (see below), whose sum is σ = 5194235808. Its totient is φ = 865705964.

The previous prime is 2597117879. The next prime is 2597117903. The reversal of 2597117898 is 8987117952.

It is a sphenic number, since it is the product of 3 distinct primes.

2597117898 is an admirable number.

It is a super-2 number, since 2×2597117898² = 13490042752223876808, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216426486 + ... + 216426497.

It is an arithmetic number, because the mean of its divisors is an integer number (649279476).

Almost surely, 2^2597117898 is an apocalyptic number.

2597117898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2597117898 is a wasteful number, since it uses less digits than its factorization.

2597117898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432852988.

The product of its digits is 2540160, while the sum is 57.

The square root of 2597117898 is about 50961.9259643903. The cubic root of 2597117898 is about 1374.5605909207.

The spelling of 2597117898 in words is "two billion, five hundred ninety-seven million, one hundred seventeen thousand, eight hundred ninety-eight".