1145173956 has 48 divisors (see below), whose sum is σ = 2815924608. Its totient is φ = 361504000.

The previous prime is 1145173903. The next prime is 1145173961. The reversal of 1145173956 is 6593715411.

It is a super-2 number, since 2×1145173956² = 2622846779001379872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7336 + ... + 48416.

It is an arithmetic number, because the mean of its divisors is an integer number (58665096).

Almost surely, 2^1145173956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1145173956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407962304).

1145173956 is an abundant number, since it is smaller than the sum of its proper divisors (1670750652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145173956 is a wasteful number, since it uses less digits than its factorization.

1145173956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41212 (or 41210 counting only the distinct ones).

The product of its digits is 113400, while the sum is 42.

The square root of 1145173956 is about 33840.4189690376. The cubic root of 1145173956 is about 1046.2219342457.

The spelling of 1145173956 in words is "one billion, one hundred forty-five million, one hundred seventy-three thousand, nine hundred fifty-six".