1451632745 has 4 divisors (see below), whose sum is σ = 1741959300. Its totient is φ = 1161306192.

The previous prime is 1451632723. The next prime is 1451632751. The reversal of 1451632745 is 5472361541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5472361541 = 31223 ⋅175267.

It can be written as a sum of positive squares in 2 ways, for example, as 706124329 + 745508416 = 26573^2 + 27304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451632745 - 2¹² = 1451628649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1451632699 and 1451632708.

It is an unprimeable number.

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, 145163270 + ... + 145163279.

It is an arithmetic number, because the mean of its divisors is an integer number (435489825).

Almost surely, 2^1451632745 is an apocalyptic number.

It is an amenable number.

1451632745 is a deficient number, since it is larger than the sum of its proper divisors (290326555).

1451632745 is an equidigital number, since it uses as much as digits as its factorization.

1451632745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290326554.

The product of its digits is 100800, while the sum is 38.

The square root of 1451632745 is about 38100.2984896444. The cubic root of 1451632745 is about 1132.2758697952.

The spelling of 1451632745 in words is "one billion, four hundred fifty-one million, six hundred thirty-two thousand, seven hundred forty-five".