2123606654 has 16 divisors (see below), whose sum is σ = 3431264928. Its totient is φ = 979890912.

The previous prime is 2123606651. The next prime is 2123606657. The reversal of 2123606654 is 4566063212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2123606651) and next prime (2123606657).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123606651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149384 + ... + 162980.

It is an arithmetic number, because the mean of its divisors is an integer number (214454058).

Almost surely, 2^2123606654 is an apocalyptic number.

2123606654 is a deficient number, since it is larger than the sum of its proper divisors (1307658274).

2123606654 is a wasteful number, since it uses less digits than its factorization.

2123606654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2123606654 is about 46082.6068490054. The cubic root of 2123606654 is about 1285.3597389957.

Adding to 2123606654 its reverse (4566063212), we get a palindrome (6689669866).

The spelling of 2123606654 in words is "two billion, one hundred twenty-three million, six hundred six thousand, six hundred fifty-four".