1151440453 has 4 divisors (see below), whose sum is σ = 1170316588. Its totient is φ = 1132564320.

The previous prime is 1151440427. The next prime is 1151440457. The reversal of 1151440453 is 3540441511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 502566724 + 648873729 = 22418^2 + 25473^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151440453 - 2¹⁷ = 1151309381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151440457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9437976 + ... + 9438097.

It is an arithmetic number, because the mean of its divisors is an integer number (292579147).

Almost surely, 2^1151440453 is an apocalyptic number.

It is an amenable number.

1151440453 is a deficient number, since it is larger than the sum of its proper divisors (18876135).

1151440453 is an equidigital number, since it uses as much as digits as its factorization.

1151440453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18876134.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1151440453 is about 33932.8815899858. The cubic root of 1151440453 is about 1048.1268047354.

Adding to 1151440453 its reverse (3540441511), we get a palindrome (4691881964).

The spelling of 1151440453 in words is "one billion, one hundred fifty-one million, four hundred forty thousand, four hundred fifty-three".