1428507547 has 2 divisors, whose sum is σ = 1428507548. Its totient is φ = 1428507546.

The previous prime is 1428507523. The next prime is 1428507599. The reversal of 1428507547 is 7457058241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428507547 - 2²³ = 1420118939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428507517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714253773 + 714253774.

It is an arithmetic number, because the mean of its divisors is an integer number (714253774).

Almost surely, 2^1428507547 is an apocalyptic number.

1428507547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428507547 is an equidigital number, since it uses as much as digits as its factorization.

1428507547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313600, while the sum is 43.

The square root of 1428507547 is about 37795.6022177184. The cubic root of 1428507547 is about 1126.2310926803.

The spelling of 1428507547 in words is "one billion, four hundred twenty-eight million, five hundred seven thousand, five hundred forty-seven".