1440681607 has 2 divisors, whose sum is σ = 1440681608. Its totient is φ = 1440681606.

The previous prime is 1440681587. The next prime is 1440681611. The reversal of 1440681607 is 7061860441.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1440681607 - 2²³ = 1432292999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440681007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720340803 + 720340804.

It is an arithmetic number, because the mean of its divisors is an integer number (720340804).

Almost surely, 2^1440681607 is an apocalyptic number.

1440681607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440681607 is an equidigital number, since it uses as much as digits as its factorization.

1440681607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1440681607 is about 37956.3118203020. The cubic root of 1440681607 is about 1129.4213778708.

The spelling of 1440681607 in words is "one billion, four hundred forty million, six hundred eighty-one thousand, six hundred seven".