1440346413 has 16 divisors (see below), whose sum is σ = 2100902400. Its totient is φ = 870498480.

The previous prime is 1440346379. The next prime is 1440346423. The reversal of 1440346413 is 3146430441.

It is not a de Polignac number, because 1440346413 - 2²¹ = 1438249261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440346423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48943 + ... + 72636.

It is an arithmetic number, because the mean of its divisors is an integer number (131306400).

Almost surely, 2^1440346413 is an apocalyptic number.

It is an amenable number.

1440346413 is a deficient number, since it is larger than the sum of its proper divisors (660555987).

1440346413 is a wasteful number, since it uses less digits than its factorization.

1440346413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121952.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1440346413 is about 37951.8960395920. The cubic root of 1440346413 is about 1129.3337793731. Note that the first 3 decimals are identical.

Adding to 1440346413 its reverse (3146430441), we get a palindrome (4586776854).

The spelling of 1440346413 in words is "one billion, four hundred forty million, three hundred forty-six thousand, four hundred thirteen".