2154146633 has 4 divisors (see below), whose sum is σ = 2154263748. Its totient is φ = 2154029520.

The previous prime is 2154146611. The next prime is 2154146647. The reversal of 2154146633 is 3366414512.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1355123344 + 799023289 = 36812^2 + 28267^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154146633 - 2⁸ = 2154146377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2154146593 and 2154146602.

It is not an unprimeable number, because it can be changed into a prime (2154146663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24278 + ... + 69983.

It is an arithmetic number, because the mean of its divisors is an integer number (538565937).

Almost surely, 2^2154146633 is an apocalyptic number.

It is an amenable number.

2154146633 is a deficient number, since it is larger than the sum of its proper divisors (117115).

2154146633 is an equidigital number, since it uses as much as digits as its factorization.

2154146633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117114.

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

The square root of 2154146633 is about 46412.7852320888. The cubic root of 2154146633 is about 1291.4921005647.

The spelling of 2154146633 in words is "two billion, one hundred fifty-four million, one hundred forty-six thousand, six hundred thirty-three".