1247161473 has 12 divisors (see below), whose sum is σ = 1807824720. Its totient is φ = 828501336.

The previous prime is 1247161469. The next prime is 1247161483. The reversal of 1247161473 is 3741617421.

1247161473 is a `hidden beast` number, since 1 + 24 + 7 + 161 + 473 = 666.

It is not a de Polignac number, because 1247161473 - 2² = 1247161469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1247161423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242283 + ... + 247376.

It is an arithmetic number, because the mean of its divisors is an integer number (150652060).

Almost surely, 2^1247161473 is an apocalyptic number.

It is an amenable number.

1247161473 is a deficient number, since it is larger than the sum of its proper divisors (560663247).

1247161473 is a wasteful number, since it uses less digits than its factorization.

1247161473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489948 (or 489945 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 1247161473 is about 35315.1734103062. The cubic root of 1247161473 is about 1076.4013375631.

Adding to 1247161473 its reverse (3741617421), we get a palindrome (4988778894).

The spelling of 1247161473 in words is "one billion, two hundred forty-seven million, one hundred sixty-one thousand, four hundred seventy-three".