1145161003 has 4 divisors (see below), whose sum is σ = 1308755440. Its totient is φ = 981566568.

The previous prime is 1145160971. The next prime is 1145161009. The reversal of 1145161003 is 3001615411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145161003 - 2⁵ = 1145160971 is a prime.

It is a super-2 number, since 2×1145161003² = 2622787445583932018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145161009) 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, 81797208 + ... + 81797221.

It is an arithmetic number, because the mean of its divisors is an integer number (327188860).

Almost surely, 2^1145161003 is an apocalyptic number.

1145161003 is a deficient number, since it is larger than the sum of its proper divisors (163594437).

1145161003 is an equidigital number, since it uses as much as digits as its factorization.

1145161003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163594436.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1145161003 is about 33840.2275849321. The cubic root of 1145161003 is about 1046.2179896445.

Adding to 1145161003 its reverse (3001615411), we get a palindrome (4146776414).

The spelling of 1145161003 in words is "one billion, one hundred forty-five million, one hundred sixty-one thousand, three".