1445387953 has 2 divisors, whose sum is σ = 1445387954. Its totient is φ = 1445387952.

The previous prime is 1445387929. The next prime is 1445387981. The reversal of 1445387953 is 3597835441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832726449 + 612661504 = 28857^2 + 24752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445387953 - 2⁵ = 1445387921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1445387897 and 1445387906.

It is not a weakly prime, because it can be changed into another prime (1440387953) by changing a digit.

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, 722693976 + 722693977.

It is an arithmetic number, because the mean of its divisors is an integer number (722693977).

Almost surely, 2^1445387953 is an apocalyptic number.

It is an amenable number.

1445387953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445387953 is an equidigital number, since it uses as much as digits as its factorization.

1445387953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The square root of 1445387953 is about 38018.2581531558. The cubic root of 1445387953 is about 1130.6498866917.

The spelling of 1445387953 in words is "one billion, four hundred forty-five million, three hundred eighty-seven thousand, nine hundred fifty-three".