345378941 has 4 divisors (see below), whose sum is σ = 363556800. Its totient is φ = 327201084.

The previous prime is 345378923. The next prime is 345378947. The reversal of 345378941 is 149873543.

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: 149873543 = 23 ⋅6516241.

It is a cyclic number.

It is not a de Polignac number, because 345378941 - 2⁶ = 345378877 is a prime.

It is a super-2 number, since 2×345378941² = 238573225772562962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345378892 and 345378901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345378947) 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, 9088901 + ... + 9088938.

It is an arithmetic number, because the mean of its divisors is an integer number (90889200).

Almost surely, 2^345378941 is an apocalyptic number.

It is an amenable number.

345378941 is a deficient number, since it is larger than the sum of its proper divisors (18177859).

345378941 is a wasteful number, since it uses less digits than its factorization.

345378941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18177858.

The product of its digits is 362880, while the sum is 44.

The square root of 345378941 is about 18584.3735702875. The cubic root of 345378941 is about 701.6146001566.

The spelling of 345378941 in words is "three hundred forty-five million, three hundred seventy-eight thousand, nine hundred forty-one".