2155633154 has 8 divisors (see below), whose sum is σ = 3233697660. Its totient is φ = 1077733936.

The previous prime is 2155633147. The next prime is 2155633157. The reversal of 2155633154 is 4513365512.

It can be written as a sum of positive squares in 2 ways, for example, as 2058709129 + 96924025 = 45373^2 + 9845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2155633157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749 + ... + 65664.

Almost surely, 2^2155633154 is an apocalyptic number.

2155633154 is a deficient number, since it is larger than the sum of its proper divisors (1078064506).

2155633154 is a wasteful number, since it uses less digits than its factorization.

2155633154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82644.

The product of its digits is 54000, while the sum is 35.

The square root of 2155633154 is about 46428.7966029704. The cubic root of 2155633154 is about 1291.7891073794.

Adding to 2155633154 its reverse (4513365512), we get a palindrome (6668998666).

The spelling of 2155633154 in words is "two billion, one hundred fifty-five million, six hundred thirty-three thousand, one hundred fifty-four".