2780150705 has 4 divisors (see below), whose sum is σ = 3336180852. Its totient is φ = 2224120560.

The previous prime is 2780150689. The next prime is 2780150749. The reversal of 2780150705 is 5070510872.

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 808435489 + 1971715216 = 28433^2 + 44404^2 .

It is not a de Polignac number, because 2780150705 - 2⁴ = 2780150689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278015066 + ... + 278015075.

It is an arithmetic number, because the mean of its divisors is an integer number (834045213).

Almost surely, 2^2780150705 is an apocalyptic number.

It is an amenable number.

2780150705 is a deficient number, since it is larger than the sum of its proper divisors (556030147).

2780150705 is an equidigital number, since it uses as much as digits as its factorization.

2780150705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556030146.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 2780150705 is about 52727.1344281102. The cubic root of 2780150705 is about 1406.1212757761.

The spelling of 2780150705 in words is "two billion, seven hundred eighty million, one hundred fifty thousand, seven hundred five".