2151445305 has 16 divisors (see below), whose sum is σ = 3460152960. Its totient is φ = 1141490688.

The previous prime is 2151445267. The next prime is 2151445333. The reversal of 2151445305 is 5035441512.

It is not a de Polignac number, because 2151445305 - 2¹² = 2151441209 is a prime.

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, 368685 + ... + 374474.

It is an arithmetic number, because the mean of its divisors is an integer number (216259560).

Almost surely, 2^2151445305 is an apocalyptic number.

It is an amenable number.

2151445305 is a deficient number, since it is larger than the sum of its proper divisors (1308707655).

2151445305 is a wasteful number, since it uses less digits than its factorization.

2151445305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743360.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2151445305 is about 46383.6749837699. The cubic root of 2151445305 is about 1290.9520254298.

Adding to 2151445305 its reverse (5035441512), we get a palindrome (7186886817).

The spelling of 2151445305 in words is "two billion, one hundred fifty-one million, four hundred forty-five thousand, three hundred five".