1000145503 has 8 divisors (see below), whose sum is σ = 1203182720. Its totient is φ = 812148120.

The previous prime is 1000145491. The next prime is 1000145527. The reversal of 1000145503 is 3055410001.

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

It is not a de Polignac number, because 1000145503 - 2⁹ = 1000144991 is a prime.

It is a super-2 number, since 2×1000145503² = 2000582054342246018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000145803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3759813 + ... + 3760078.

It is an arithmetic number, because the mean of its divisors is an integer number (150397840).

Almost surely, 2^1000145503 is an apocalyptic number.

1000145503 is a deficient number, since it is larger than the sum of its proper divisors (203037217).

1000145503 is an equidigital number, since it uses as much as digits as its factorization.

1000145503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7519917.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1000145503 is about 31625.0771224356. The cubic root of 1000145503 is about 1000.0484986478.

Adding to 1000145503 its reverse (3055410001), we get a palindrome (4055555504).

The spelling of 1000145503 in words is "one billion, one hundred forty-five thousand, five hundred three".