2145003967 has 4 divisors (see below), whose sum is σ = 2145277296. Its totient is φ = 2144730640.

The previous prime is 2145003953. The next prime is 2145003977. The reversal of 2145003967 is 7693005412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145003967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145003977) 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, 124534 + ... + 140707.

It is an arithmetic number, because the mean of its divisors is an integer number (536319324).

Almost surely, 2^2145003967 is an apocalyptic number.

2145003967 is a deficient number, since it is larger than the sum of its proper divisors (273329).

2145003967 is an equidigital number, since it uses as much as digits as its factorization.

2145003967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273328.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 2145003967 is about 46314.1875347069. The cubic root of 2145003967 is about 1289.6623852576.

The spelling of 2145003967 in words is "two billion, one hundred forty-five million, three thousand, nine hundred sixty-seven".