345146491 has 2 divisors, whose sum is σ = 345146492. Its totient is φ = 345146490.

The previous prime is 345146443. The next prime is 345146513. The reversal of 345146491 is 194641543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345146491 - 2¹⁵ = 345113723 is a prime.

It is a super-2 number, since 2×345146491² = 238252200499226162, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345146491.

It is not a weakly prime, because it can be changed into another prime (345144491) 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 as a sum of consecutive naturals, namely, 172573245 + 172573246.

It is an arithmetic number, because the mean of its divisors is an integer number (172573246).

Almost surely, 2^345146491 is an apocalyptic number.

345146491 is a deficient number, since it is larger than the sum of its proper divisors (1).

345146491 is an equidigital number, since it uses as much as digits as its factorization.

345146491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 345146491 is about 18578.1186076524. The cubic root of 345146491 is about 701.4571625363.

The spelling of 345146491 in words is "three hundred forty-five million, one hundred forty-six thousand, four hundred ninety-one".