1451392945 has 4 divisors (see below), whose sum is σ = 1741671540. Its totient is φ = 1161114352.

The previous prime is 1451392847. The next prime is 1451392967. The reversal of 1451392945 is 5492931541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 818417664 + 632975281 = 28608^2 + 25159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451392945 - 2⁹ = 1451392433 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, 145139290 + ... + 145139299.

It is an arithmetic number, because the mean of its divisors is an integer number (435417885).

Almost surely, 2^1451392945 is an apocalyptic number.

It is an amenable number.

1451392945 is a deficient number, since it is larger than the sum of its proper divisors (290278595).

1451392945 is an equidigital number, since it uses as much as digits as its factorization.

1451392945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290278594.

The product of its digits is 194400, while the sum is 43.

The square root of 1451392945 is about 38097.1514026968. The cubic root of 1451392945 is about 1132.2135182335.

The spelling of 1451392945 in words is "one billion, four hundred fifty-one million, three hundred ninety-two thousand, nine hundred forty-five".