1440746453 has 8 divisors (see below), whose sum is σ = 1467405408. Its totient is φ = 1414309104.

The previous prime is 1440746449. The next prime is 1440746467. The reversal of 1440746453 is 3546470441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440746453 - 2² = 1440746449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440746423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42251 + ... + 68312.

It is an arithmetic number, because the mean of its divisors is an integer number (183425676).

Almost surely, 2^1440746453 is an apocalyptic number.

It is an amenable number.

1440746453 is a deficient number, since it is larger than the sum of its proper divisors (26658955).

1440746453 is a wasteful number, since it uses less digits than its factorization.

1440746453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110803.

The product of its (nonzero) digits is 161280, while the sum is 38.

The square root of 1440746453 is about 37957.1660296182. The cubic root of 1440746453 is about 1129.4383229426.

The spelling of 1440746453 in words is "one billion, four hundred forty million, seven hundred forty-six thousand, four hundred fifty-three".