2145230154 has 48 divisors (see below), whose sum is σ = 4685428800. Its totient is φ = 709339968.

The previous prime is 2145230111. The next prime is 2145230159. The reversal of 2145230154 is 4510325412.

It is not an unprimeable number, because it can be changed into a prime (2145230159) 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, 2606187 + ... + 2607009.

It is an arithmetic number, because the mean of its divisors is an integer number (97613100).

Almost surely, 2^2145230154 is an apocalyptic number.

2145230154 is an abundant number, since it is smaller than the sum of its proper divisors (2540198646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145230154 is a wasteful number, since it uses less digits than its factorization.

2145230154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2145230154 is about 46316.6293462726. The cubic root of 2145230154 is about 1289.7077145620.

Adding to 2145230154 its reverse (4510325412), we get a palindrome (6655555566).

The spelling of 2145230154 in words is "two billion, one hundred forty-five million, two hundred thirty thousand, one hundred fifty-four".