1305473427 has 12 divisors (see below), whose sum is σ = 1890168384. Its totient is φ = 868245840.

The previous prime is 1305473419. The next prime is 1305473437. The reversal of 1305473427 is 7243745031.

1305473427 is a `hidden beast` number, since 1 + 305 + 4 + 7 + 342 + 7 = 666.

It is not a de Polignac number, because 1305473427 - 2³ = 1305473419 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1305473391 and 1305473400.

It is not an unprimeable number, because it can be changed into a prime (1305473437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168483 + ... + 176060.

It is an arithmetic number, because the mean of its divisors is an integer number (157514032).

Almost surely, 2^1305473427 is an apocalyptic number.

1305473427 is a deficient number, since it is larger than the sum of its proper divisors (584694957).

1305473427 is a wasteful number, since it uses less digits than its factorization.

1305473427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344970 (or 344967 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 1305473427 is about 36131.3358042572. The cubic root of 1305473427 is about 1092.9224459174.

The spelling of 1305473427 in words is "one billion, three hundred five million, four hundred seventy-three thousand, four hundred twenty-seven".