2145512399 has 8 divisors (see below), whose sum is σ = 2162388480. Its totient is φ = 2128657176.

The previous prime is 2145512393. The next prime is 2145512419. The reversal of 2145512399 is 9932155412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145512399 - 2⁸ = 2145512143 is a prime.

It is a super-3 number, since 3×2145512399³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145512393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249164 + ... + 257630.

It is an arithmetic number, because the mean of its divisors is an integer number (270298560).

Almost surely, 2^2145512399 is an apocalyptic number.

2145512399 is a deficient number, since it is larger than the sum of its proper divisors (16876081).

2145512399 is a wasteful number, since it uses less digits than its factorization.

2145512399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10429.

The product of its digits is 97200, while the sum is 41.

The square root of 2145512399 is about 46319.6761538766. The cubic root of 2145512399 is about 1289.7642737755.

The spelling of 2145512399 in words is "two billion, one hundred forty-five million, five hundred twelve thousand, three hundred ninety-nine".