2145453412 has 24 divisors (see below), whose sum is σ = 3852572472. Its totient is φ = 1044806400.

The previous prime is 2145453311. The next prime is 2145453439. The reversal of 2145453412 is 2143545412.

It can be written as a sum of positive squares in 4 ways, for example, as 23561316 + 2121892096 = 4854^2 + 46064^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89862 + ... + 111202.

It is an arithmetic number, because the mean of its divisors is an integer number (160523853).

Almost surely, 2^2145453412 is an apocalyptic number.

It is an amenable number.

2145453412 is a deficient number, since it is larger than the sum of its proper divisors (1707119060).

2145453412 is a wasteful number, since it uses less digits than its factorization.

2145453412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21999 (or 21997 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 2145453412 is about 46319.0394114558. The cubic root of 2145453412 is about 1289.7524537518.

Adding to 2145453412 its reverse (2143545412), we get a palindrome (4288998824).

The spelling of 2145453412 in words is "two billion, one hundred forty-five million, four hundred fifty-three thousand, four hundred twelve".