1001003145 has 16 divisors (see below), whose sum is σ = 1628752320. Its totient is φ = 524819264.

The previous prime is 1001003141. The next prime is 1001003147. The reversal of 1001003145 is 5413001001.

It is a cyclic number.

It is not a de Polignac number, because 1001003145 - 2² = 1001003141 is a prime.

It is a super-3 number, since 3×1001003145³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1001003141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564654 + ... + 566423.

It is an arithmetic number, because the mean of its divisors is an integer number (101797020).

Almost surely, 2^1001003145 is an apocalyptic number.

1001003145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001003145 is a deficient number, since it is larger than the sum of its proper divisors (627749175).

1001003145 is a wasteful number, since it uses less digits than its factorization.

1001003145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131144.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1001003145 is about 31638.6337410451. The cubic root of 1001003145 is about 1000.3342699178.

Adding to 1001003145 its reverse (5413001001), we get a palindrome (6414004146).

The spelling of 1001003145 in words is "one billion, one million, three thousand, one hundred forty-five".