1145579801 has 4 divisors (see below), whose sum is σ = 1145760000. Its totient is φ = 1145399604.

The previous prime is 1145579783. The next prime is 1145579803. The reversal of 1145579801 is 1089755411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145579801 - 2¹⁴ = 1145563417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1145579803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80201 + ... + 93398.

It is an arithmetic number, because the mean of its divisors is an integer number (286440000).

Almost surely, 2^1145579801 is an apocalyptic number.

It is an amenable number.

1145579801 is a deficient number, since it is larger than the sum of its proper divisors (180199).

1145579801 is an equidigital number, since it uses as much as digits as its factorization.

1145579801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180198.

The product of its (nonzero) digits is 50400, while the sum is 41.

The square root of 1145579801 is about 33846.4148913884. The cubic root of 1145579801 is about 1046.3455119168.

The spelling of 1145579801 in words is "one billion, one hundred forty-five million, five hundred seventy-nine thousand, eight hundred one".