2145203001 has 8 divisors (see below), whose sum is σ = 3178078560. Its totient is φ = 1430135316.

The previous prime is 2145202991. The next prime is 2145203003. The reversal of 2145203001 is 1003025412.

It is not a de Polignac number, because 2145203001 - 2¹³ = 2145194809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145203003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39725955 + ... + 39726008.

It is an arithmetic number, because the mean of its divisors is an integer number (397259820).

Almost surely, 2^2145203001 is an apocalyptic number.

It is an amenable number.

2145203001 is a deficient number, since it is larger than the sum of its proper divisors (1032875559).

2145203001 is an equidigital number, since it uses as much as digits as its factorization.

2145203001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79451972 (or 79451966 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2145203001 is about 46316.3362216832. The cubic root of 2145203001 is about 1289.7022730975.

Adding to 2145203001 its reverse (1003025412), we get a palindrome (3148228413).

The spelling of 2145203001 in words is "two billion, one hundred forty-five million, two hundred three thousand, one".