2154253605 has 32 divisors (see below), whose sum is σ = 3959040000. Its totient is φ = 979843392.

The previous prime is 2154253597. The next prime is 2154253631. The reversal of 2154253605 is 5063524512.

It is not a de Polignac number, because 2154253605 - 2³ = 2154253597 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 30655 + ... + 72444.

It is an arithmetic number, because the mean of its divisors is an integer number (123720000).

Almost surely, 2^2154253605 is an apocalyptic number.

It is an amenable number.

2154253605 is a deficient number, since it is larger than the sum of its proper divisors (1804786395).

2154253605 is a wasteful number, since it uses less digits than its factorization.

2154253605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103313.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 2154253605 is about 46413.9376157637. The cubic root of 2154253605 is about 1291.5134781261.

The spelling of 2154253605 in words is "two billion, one hundred fifty-four million, two hundred fifty-three thousand, six hundred five".