1461670345 has 4 divisors (see below), whose sum is σ = 1754004420. Its totient is φ = 1169336272.

The previous prime is 1461670333. The next prime is 1461670369. The reversal of 1461670345 is 5430761641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5430761641 = 41 ⋅132457601.

It can be written as a sum of positive squares in 2 ways, for example, as 1091377296 + 370293049 = 33036^2 + 19243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461670345 is a prime.

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 in 3 ways as a sum of consecutive naturals, for example, 146167030 + ... + 146167039.

It is an arithmetic number, because the mean of its divisors is an integer number (438501105).

Almost surely, 2^1461670345 is an apocalyptic number.

It is an amenable number.

1461670345 is a deficient number, since it is larger than the sum of its proper divisors (292334075).

1461670345 is an equidigital number, since it uses as much as digits as its factorization.

1461670345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292334074.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1461670345 is about 38231.7975643312. The cubic root of 1461670345 is about 1134.8796588822.

The spelling of 1461670345 in words is "one billion, four hundred sixty-one million, six hundred seventy thousand, three hundred forty-five".