345891849 has 4 divisors (see below), whose sum is σ = 461189136. Its totient is φ = 230594564.

The previous prime is 345891841. The next prime is 345891853. The reversal of 345891849 is 948198543.

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, and also an emirpimes, since its reverse is a distinct semiprime: 948198543 = 3 ⋅316066181.

It is a cyclic number.

It is not a de Polignac number, because 345891849 - 2³ = 345891841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345891841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57648639 + ... + 57648644.

It is an arithmetic number, because the mean of its divisors is an integer number (115297284).

Almost surely, 2^345891849 is an apocalyptic number.

It is an amenable number.

345891849 is a deficient number, since it is larger than the sum of its proper divisors (115297287).

345891849 is a wasteful number, since it uses less digits than its factorization.

345891849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115297286.

The product of its digits is 1244160, while the sum is 51.

The square root of 345891849 is about 18598.1678936394. The cubic root of 345891849 is about 701.9617413261.

The spelling of 345891849 in words is "three hundred forty-five million, eight hundred ninety-one thousand, eight hundred forty-nine".