2645146217 has 4 divisors (see below), whose sum is σ = 3023024256. Its totient is φ = 2267268180.

The previous prime is 2645146157. The next prime is 2645146223. The reversal of 2645146217 is 7126415462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2645146217 - 2⁸ = 2645145961 is a prime.

It is a super-2 number, since 2×2645146217² = 13993597018618822178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2645146117) 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, 188939009 + ... + 188939022.

It is an arithmetic number, because the mean of its divisors is an integer number (755756064).

Almost surely, 2^2645146217 is an apocalyptic number.

It is an amenable number.

2645146217 is a deficient number, since it is larger than the sum of its proper divisors (377878039).

2645146217 is an equidigital number, since it uses as much as digits as its factorization.

2645146217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377878038.

The product of its digits is 80640, while the sum is 38.

The square root of 2645146217 is about 51430.9849895955. The cubic root of 2645146217 is about 1382.9821069834.

The spelling of 2645146217 in words is "two billion, six hundred forty-five million, one hundred forty-six thousand, two hundred seventeen".