1451281913 has 2 divisors, whose sum is σ = 1451281914. Its totient is φ = 1451281912.

The previous prime is 1451281907. The next prime is 1451281919. The reversal of 1451281913 is 3191821541.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1451281907) and next prime (1451281919).

It can be written as a sum of positive squares in only one way, i.e., 1433909689 + 17372224 = 37867^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451281913 - 2⁶ = 1451281849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1451281919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725640956 + 725640957.

It is an arithmetic number, because the mean of its divisors is an integer number (725640957).

Almost surely, 2^1451281913 is an apocalyptic number.

It is an amenable number.

1451281913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451281913 is an equidigital number, since it uses as much as digits as its factorization.

1451281913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 35.

The square root of 1451281913 is about 38095.6941530142. The cubic root of 1451281913 is about 1132.1846459382.

The spelling of 1451281913 in words is "one billion, four hundred fifty-one million, two hundred eighty-one thousand, nine hundred thirteen".