1478710139 has 2 divisors, whose sum is σ = 1478710140. Its totient is φ = 1478710138.

The previous prime is 1478710111. The next prime is 1478710157. The reversal of 1478710139 is 9310178741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1478710139 - 2¹² = 1478706043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1478710096 and 1478710105.

It is not a weakly prime, because it can be changed into another prime (1478710159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739355069 + 739355070.

It is an arithmetic number, because the mean of its divisors is an integer number (739355070).

Almost surely, 2^1478710139 is an apocalyptic number.

1478710139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478710139 is an equidigital number, since it uses as much as digits as its factorization.

1478710139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 1478710139 is about 38454.0002990586. Note that the first 3 decimals coincide. The cubic root of 1478710139 is about 1139.2726813971.

The spelling of 1478710139 in words is "one billion, four hundred seventy-eight million, seven hundred ten thousand, one hundred thirty-nine".