2148179779 has 2 divisors, whose sum is σ = 2148179780. Its totient is φ = 2148179778.

The previous prime is 2148179753. The next prime is 2148179801. The reversal of 2148179779 is 9779718412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2148179779 - 2¹³ = 2148171587 is a prime.

It is a super-2 number, since 2×2148179779² = 9229352725808977682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2148179879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074089889 + 1074089890.

It is an arithmetic number, because the mean of its divisors is an integer number (1074089890).

Almost surely, 2^2148179779 is an apocalyptic number.

2148179779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148179779 is an equidigital number, since it uses as much as digits as its factorization.

2148179779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 55.

The square root of 2148179779 is about 46348.4603735658. The cubic root of 2148179779 is about 1290.2985465697.

The spelling of 2148179779 in words is "two billion, one hundred forty-eight million, one hundred seventy-nine thousand, seven hundred seventy-nine".