1795440640 has 240 divisors, whose sum is σ = 5133671424. Its totient is φ = 589824000.

The previous prime is 1795440637. The next prime is 1795440643. The reversal of 1795440640 is 460445971.

It is an interprime number because it is at equal distance from previous prime (1795440637) and next prime (1795440643).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1795440593 and 1795440602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1795440643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17776590 + ... + 17776690.

Almost surely, 2^1795440640 is an apocalyptic number.

1795440640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1795440640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2566835712).

1795440640 is an abundant number, since it is smaller than the sum of its proper divisors (3338230784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1795440640 is an equidigital number, since it uses as much as digits as its factorization.

1795440640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1795440640 is about 42372.6402292800. The cubic root of 1795440640 is about 1215.4124585423.

The spelling of 1795440640 in words is "one billion, seven hundred ninety-five million, four hundred forty thousand, six hundred forty".