2078148421 has 2 divisors, whose sum is σ = 2078148422. Its totient is φ = 2078148420.

The previous prime is 2078148409. The next prime is 2078148433. The reversal of 2078148421 is 1248418702.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2078148409) and next prime (2078148433).

It can be written as a sum of positive squares in only one way, i.e., 2078083396 + 65025 = 45586^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078148421 - 2⁹ = 2078147909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078148461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039074210 + 1039074211.

It is an arithmetic number, because the mean of its divisors is an integer number (1039074211).

Almost surely, 2^2078148421 is an apocalyptic number.

It is an amenable number.

2078148421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078148421 is an equidigital number, since it uses as much as digits as its factorization.

2078148421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 2078148421 is about 45586.7132068106. The cubic root of 2078148421 is about 1276.1219745380.

The spelling of 2078148421 in words is "two billion, seventy-eight million, one hundred forty-eight thousand, four hundred twenty-one".