1440997613 has 8 divisors (see below), whose sum is σ = 1572422016. Its totient is φ = 1309644000.

The previous prime is 1440997567. The next prime is 1440997627. The reversal of 1440997613 is 3167990441.

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 1440997613 - 2¹⁴ = 1440981229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440997643) 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, 30620 + ... + 61802.

It is an arithmetic number, because the mean of its divisors is an integer number (196552752).

Almost surely, 2^1440997613 is an apocalyptic number.

It is an amenable number.

1440997613 is a deficient number, since it is larger than the sum of its proper divisors (131424403).

1440997613 is a wasteful number, since it uses less digits than its factorization.

1440997613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35395.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1440997613 is about 37960.4743516200. The cubic root of 1440997613 is about 1129.5039493977.

The spelling of 1440997613 in words is "one billion, four hundred forty million, nine hundred ninety-seven thousand, six hundred thirteen".