1145047871 has 8 divisors (see below), whose sum is σ = 1260198864. Its totient is φ = 1031739520.

The previous prime is 1145047867. The next prime is 1145047909. The reversal of 1145047871 is 1787405411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145047871 - 2² = 1145047867 is a prime.

It is a super-2 number, since 2×1145047871² = 2622269253763265282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145047171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459356 + ... + 461841.

It is an arithmetic number, because the mean of its divisors is an integer number (157524858).

Almost surely, 2^1145047871 is an apocalyptic number.

1145047871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1145047871 is a deficient number, since it is larger than the sum of its proper divisors (115150993).

1145047871 is a wasteful number, since it uses less digits than its factorization.

1145047871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921321.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 1145047871 is about 33838.5559827839. Note that the first 3 decimals coincide. The cubic root of 1145047871 is about 1046.1835360811.

The spelling of 1145047871 in words is "one billion, one hundred forty-five million, forty-seven thousand, eight hundred seventy-one".