1451139073 has 2 divisors, whose sum is σ = 1451139074. Its totient is φ = 1451139072.

The previous prime is 1451138999. The next prime is 1451139097. The reversal of 1451139073 is 3709311541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 927324304 + 523814769 = 30452^2 + 22887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451139073 - 2⁹ = 1451138561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1451139673) by changing a digit.

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 as a sum of consecutive naturals, namely, 725569536 + 725569537.

It is an arithmetic number, because the mean of its divisors is an integer number (725569537).

Almost surely, 2^1451139073 is an apocalyptic number.

It is an amenable number.

1451139073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451139073 is an equidigital number, since it uses as much as digits as its factorization.

1451139073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1451139073 is about 38093.8193543257. The cubic root of 1451139073 is about 1132.1475002581.

The spelling of 1451139073 in words is "one billion, four hundred fifty-one million, one hundred thirty-nine thousand, seventy-three".