1451451493 has 2 divisors, whose sum is σ = 1451451494. Its totient is φ = 1451451492.

The previous prime is 1451451467. The next prime is 1451451539. The reversal of 1451451493 is 3941541541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831341889 + 620109604 = 28833^2 + 24902^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451451493 - 2⁹ = 1451450981 is a prime.

It is a super-2 number, since 2×1451451493² = 4213422873063858098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451451413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725725746 + 725725747.

It is an arithmetic number, because the mean of its divisors is an integer number (725725747).

Almost surely, 2^1451451493 is an apocalyptic number.

It is an amenable number.

1451451493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451451493 is an equidigital number, since it uses as much as digits as its factorization.

1451451493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 1451451493 is about 38097.9197988552. The cubic root of 1451451493 is about 1132.2287422168.

The spelling of 1451451493 in words is "one billion, four hundred fifty-one million, four hundred fifty-one thousand, four hundred ninety-three".