2148012945 has 32 divisors (see below), whose sum is σ = 4112438400. Its totient is φ = 1057482432.

The previous prime is 2148012929. The next prime is 2148012949. The reversal of 2148012945 is 5492108412.

It is not a de Polignac number, because 2148012945 - 2⁴ = 2148012929 is a prime.

It is a super-2 number, since 2×2148012945² = 9227919223775146050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2148012949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610215 + ... + 613724.

It is an arithmetic number, because the mean of its divisors is an integer number (128513700).

Almost surely, 2^2148012945 is an apocalyptic number.

It is an amenable number.

2148012945 is a deficient number, since it is larger than the sum of its proper divisors (1964425455).

2148012945 is a wasteful number, since it uses less digits than its factorization.

2148012945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223966 (or 1223960 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2148012945 is about 46346.6605593111. The cubic root of 2148012945 is about 1290.2651429036.

The spelling of 2148012945 in words is "two billion, one hundred forty-eight million, twelve thousand, nine hundred forty-five".