1478012357 has 2 divisors, whose sum is σ = 1478012358. Its totient is φ = 1478012356.

The previous prime is 1478012339. The next prime is 1478012359. The reversal of 1478012357 is 7532108741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 803779201 + 674233156 = 28351^2 + 25966^2 .

It is an emirp because it is prime and its reverse (7532108741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1478012357 - 2¹² = 1478008261 is a prime.

Together with 1478012359, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1478012357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1478012359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739006178 + 739006179.

It is an arithmetic number, because the mean of its divisors is an integer number (739006179).

Almost surely, 2^1478012357 is an apocalyptic number.

It is an amenable number.

1478012357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478012357 is an equidigital number, since it uses as much as digits as its factorization.

1478012357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1478012357 is about 38444.9262842316. The cubic root of 1478012357 is about 1139.0934510832.

The spelling of 1478012357 in words is "one billion, four hundred seventy-eight million, twelve thousand, three hundred fifty-seven".