1453723709 has 2 divisors, whose sum is σ = 1453723710. Its totient is φ = 1453723708.

The previous prime is 1453723699. The next prime is 1453723741. The reversal of 1453723709 is 9073273541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1437547225 + 16176484 = 37915^2 + 4022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453723709 is a prime.

It is a super-2 number, since 2×1453723709² = 4226625244217433362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1453723409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 726861854 + 726861855.

It is an arithmetic number, because the mean of its divisors is an integer number (726861855).

Almost surely, 2^1453723709 is an apocalyptic number.

It is an amenable number.

1453723709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1453723709 is an equidigital number, since it uses as much as digits as its factorization.

1453723709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 1453723709 is about 38127.7288728295. The cubic root of 1453723709 is about 1132.8192607326.

The spelling of 1453723709 in words is "one billion, four hundred fifty-three million, seven hundred twenty-three thousand, seven hundred nine".