2154466697 has 4 divisors (see below), whose sum is σ = 2154580176. Its totient is φ = 2154353220.

The previous prime is 2154466679. The next prime is 2154466757. The reversal of 2154466697 is 7966644512.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2154466697 - 2³⁰ = 1080724873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154466667) 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, 20579 + ... + 68792.

It is an arithmetic number, because the mean of its divisors is an integer number (538645044).

Almost surely, 2^2154466697 is an apocalyptic number.

It is an amenable number.

2154466697 is a deficient number, since it is larger than the sum of its proper divisors (113479).

2154466697 is an equidigital number, since it uses as much as digits as its factorization.

2154466697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113478.

The product of its digits is 2177280, while the sum is 50.

The square root of 2154466697 is about 46416.2331194594. The cubic root of 2154466697 is about 1291.5560608743.

The spelling of 2154466697 in words is "two billion, one hundred fifty-four million, four hundred sixty-six thousand, six hundred ninety-seven".