2145203154 has 12 divisors (see below), whose sum is σ = 4647940206. Its totient is φ = 715067712.

The previous prime is 2145203149. The next prime is 2145203197. The reversal of 2145203154 is 4513025412.

It can be written as a sum of positive squares in only one way, i.e., 1730144025 + 415059129 = 41595^2 + 20373^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59588959 + ... + 59588994.

Almost surely, 2^2145203154 is an apocalyptic number.

2145203154 is an abundant number, since it is smaller than the sum of its proper divisors (2502737052).

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

2145203154 is a wasteful number, since it uses less digits than its factorization.

2145203154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119177961 (or 119177958 counting only the distinct ones).

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

The square root of 2145203154 is about 46316.3378733682. The cubic root of 2145203154 is about 1289.7023037588.

Adding to 2145203154 its reverse (4513025412), we get a palindrome (6658228566).

The spelling of 2145203154 in words is "two billion, one hundred forty-five million, two hundred three thousand, one hundred fifty-four".