2105434154 has 16 divisors (see below), whose sum is σ = 3212056320. Its totient is φ = 1034771760.

The previous prime is 2105434153. The next prime is 2105434157. The reversal of 2105434154 is 4514345012.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2105434153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212687 + ... + 222365.

It is an arithmetic number, because the mean of its divisors is an integer number (200753520).

Almost surely, 2^2105434154 is an apocalyptic number.

2105434154 is a deficient number, since it is larger than the sum of its proper divisors (1106622166).

2105434154 is a wasteful number, since it uses less digits than its factorization.

2105434154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11525.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2105434154 is about 45885.0101231328. The cubic root of 2105434154 is about 1281.6827952318.

Adding to 2105434154 its reverse (4514345012), we get a palindrome (6619779166).

The spelling of 2105434154 in words is "two billion, one hundred five million, four hundred thirty-four thousand, one hundred fifty-four".