1047397185 has 24 divisors (see below), whose sum is σ = 1823103360. Its totient is φ = 556268832.

The previous prime is 1047397171. The next prime is 1047397201. The reversal of 1047397185 is 5817937401.

1047397185 is a `hidden beast` number, since 10 + 473 + 97 + 1 + 85 = 666.

It is not a de Polignac number, because 1047397185 - 2⁶ = 1047397121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1047397185.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37939 + ... + 59448.

It is an arithmetic number, because the mean of its divisors is an integer number (75962640).

Almost surely, 2^1047397185 is an apocalyptic number.

1047397185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1047397185 is a deficient number, since it is larger than the sum of its proper divisors (775706175).

1047397185 is a wasteful number, since it uses less digits than its factorization.

1047397185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97637 (or 97634 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 1047397185 is about 32363.5162644605. The cubic root of 1047397185 is about 1015.5558232773. Note that the first 3 decimals are identical.

The spelling of 1047397185 in words is "one billion, forty-seven million, three hundred ninety-seven thousand, one hundred eighty-five".