2078775631 has 2 divisors, whose sum is σ = 2078775632. Its totient is φ = 2078775630.

The previous prime is 2078775557. The next prime is 2078775641. The reversal of 2078775631 is 1365778702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2078775631 - 2⁹ = 2078775119 is a prime.

It is a super-2 number, since 2×2078775631² = 8642616248078896322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078775641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039387815 + 1039387816.

It is an arithmetic number, because the mean of its divisors is an integer number (1039387816).

Almost surely, 2^2078775631 is an apocalyptic number.

2078775631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078775631 is an equidigital number, since it uses as much as digits as its factorization.

2078775631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 2078775631 is about 45593.5919949284. The cubic root of 2078775631 is about 1276.2503445726.

The spelling of 2078775631 in words is "two billion, seventy-eight million, seven hundred seventy-five thousand, six hundred thirty-one".