2164223654 has 4 divisors (see below), whose sum is σ = 3246335484. Its totient is φ = 1082111826.

The previous prime is 2164223561. The next prime is 2164223689. The reversal of 2164223654 is 4563224612.

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

It is a super-2 number, since 2×2164223654² = 9367728049066223432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541055912 + ... + 541055915.

It is an arithmetic number, because the mean of its divisors is an integer number (811583871).

Almost surely, 2^2164223654 is an apocalyptic number.

2164223654 is a deficient number, since it is larger than the sum of its proper divisors (1082111830).

2164223654 is a wasteful number, since it uses less digits than its factorization.

2164223654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082111829.

The product of its digits is 69120, while the sum is 35.

The square root of 2164223654 is about 46521.2172454677. The cubic root of 2164223654 is about 1293.5028197631.

The spelling of 2164223654 in words is "two billion, one hundred sixty-four million, two hundred twenty-three thousand, six hundred fifty-four".