2154330505 has 16 divisors (see below), whose sum is σ = 2618020944. Its totient is φ = 1701676800.

The previous prime is 2154330499. The next prime is 2154330517. The reversal of 2154330505 is 5050334512.

It can be written as a sum of positive squares in 8 ways, for example, as 41641209 + 2112689296 = 6453^2 + 45964^2 .

It is not a de Polignac number, because 2154330505 - 2²⁹ = 1617459593 is a prime.

It is a super-2 number, since 2×2154330505² = 9282279849547110050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182647 + ... + 194083.

It is an arithmetic number, because the mean of its divisors is an integer number (163626309).

Almost surely, 2^2154330505 is an apocalyptic number.

It is an amenable number.

2154330505 is a deficient number, since it is larger than the sum of its proper divisors (463690439).

2154330505 is a wasteful number, since it uses less digits than its factorization.

2154330505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11916.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 2154330505 is about 46414.7660233249. The cubic root of 2154330505 is about 1291.5288455840.

The spelling of 2154330505 in words is "two billion, one hundred fifty-four million, three hundred thirty thousand, five hundred five".