2348969857581 has 4 divisors (see below), whose sum is σ = 3131959810112. Its totient is φ = 1565979905052.

The previous prime is 2348969857499. The next prime is 2348969857583. The reversal of 2348969857581 is 1857589698432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2348969857581 - 2⁷ = 2348969857453 is a prime.

It is a super-2 number, since 2×2348969857581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2348969857583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391494976261 + ... + 391494976266.

It is an arithmetic number, because the mean of its divisors is an integer number (782989952528).

Almost surely, 2^{2348969857581} is an apocalyptic number.

It is an amenable number.

2348969857581 is a deficient number, since it is larger than the sum of its proper divisors (782989952531).

2348969857581 is an equidigital number, since it uses as much as digits as its factorization.

2348969857581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782989952530.

The product of its digits is 1045094400, while the sum is 75.

The spelling of 2348969857581 in words is "two trillion, three hundred forty-eight billion, nine hundred sixty-nine million, eight hundred fifty-seven thousand, five hundred eighty-one".