1405457146 has 4 divisors (see below), whose sum is σ = 2108185722. Its totient is φ = 702728572.

The previous prime is 1405457129. The next prime is 1405457161. The reversal of 1405457146 is 6417545041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6417545041 = 2179 ⋅2945179.

It can be written as a sum of positive squares in only one way, i.e., 1368186121 + 37271025 = 36989^2 + 6105^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351364285 + ... + 351364288.

Almost surely, 2^1405457146 is an apocalyptic number.

1405457146 is a deficient number, since it is larger than the sum of its proper divisors (702728576).

1405457146 is an equidigital number, since it uses as much as digits as its factorization.

1405457146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702728575.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 1405457146 is about 37489.4271228569. The cubic root of 1405457146 is about 1120.1405930012.

The spelling of 1405457146 in words is "one billion, four hundred five million, four hundred fifty-seven thousand, one hundred forty-six".