2154067145 has 24 divisors (see below), whose sum is σ = 2738070216. Its totient is φ = 1626584832.

The previous prime is 2154067141. The next prime is 2154067151. The reversal of 2154067145 is 5417604512.

It can be written as a sum of positive squares in 4 ways, for example, as 284023609 + 1870043536 = 16853^2 + 43244^2 .

It is not a de Polignac number, because 2154067145 - 2² = 2154067141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154067141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526829 + ... + 530901.

It is an arithmetic number, because the mean of its divisors is an integer number (114086259).

Almost surely, 2^2154067145 is an apocalyptic number.

It is an amenable number.

2154067145 is a deficient number, since it is larger than the sum of its proper divisors (584003071).

2154067145 is a wasteful number, since it uses less digits than its factorization.

2154067145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4409 (or 4390 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 2154067145 is about 46411.9289084175. The cubic root of 2154067145 is about 1291.4762150186.

The spelling of 2154067145 in words is "two billion, one hundred fifty-four million, sixty-seven thousand, one hundred forty-five".