2072438785 has 4 divisors (see below), whose sum is σ = 2486926548. Its totient is φ = 1657951024.

The previous prime is 2072438773. The next prime is 2072438791. The reversal of 2072438785 is 5878342702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574129521 + 1498309264 = 23961^2 + 38708^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072438785 - 2⁷ = 2072438657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207243874 + ... + 207243883.

It is an arithmetic number, because the mean of its divisors is an integer number (621731637).

Almost surely, 2^2072438785 is an apocalyptic number.

It is an amenable number.

2072438785 is a deficient number, since it is larger than the sum of its proper divisors (414487763).

2072438785 is an equidigital number, since it uses as much as digits as its factorization.

2072438785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414487762.

The product of its (nonzero) digits is 752640, while the sum is 46.

The square root of 2072438785 is about 45524.0462283396. The cubic root of 2072438785 is about 1274.9522032576.

The spelling of 2072438785 in words is "two billion, seventy-two million, four hundred thirty-eight thousand, seven hundred eighty-five".