2154384705 has 32 divisors (see below), whose sum is σ = 3824133120. Its totient is φ = 1026841280.

The previous prime is 2154384697. The next prime is 2154384707. The reversal of 2154384705 is 5074834512.

It is not a de Polignac number, because 2154384705 - 2³ = 2154384697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154384707) 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 31 ways as a sum of consecutive naturals, for example, 100917 + ... + 120386.

It is an arithmetic number, because the mean of its divisors is an integer number (119504160).

Almost surely, 2^2154384705 is an apocalyptic number.

It is an amenable number.

2154384705 is a deficient number, since it is larger than the sum of its proper divisors (1669748415).

2154384705 is a wasteful number, since it uses less digits than its factorization.

2154384705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221381.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 2154384705 is about 46415.3498855713. The cubic root of 2154384705 is about 1291.5396765245.

The spelling of 2154384705 in words is "two billion, one hundred fifty-four million, three hundred eighty-four thousand, seven hundred five".