2078991323 has 2 divisors, whose sum is σ = 2078991324. Its totient is φ = 2078991322.

The previous prime is 2078991311. The next prime is 2078991337. The reversal of 2078991323 is 3231998702.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2078991323 - 2²⁴ = 2062214107 is a prime.

It is a super-2 number, since 2×2078991323² = 8644409842218580658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2078991623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039495661 + 1039495662.

It is an arithmetic number, because the mean of its divisors is an integer number (1039495662).

Almost surely, 2^2078991323 is an apocalyptic number.

2078991323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078991323 is an equidigital number, since it uses as much as digits as its factorization.

2078991323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 2078991323 is about 45595.9573098318. The cubic root of 2078991323 is about 1276.2944839312.

The spelling of 2078991323 in words is "two billion, seventy-eight million, nine hundred ninety-one thousand, three hundred twenty-three".