2145544354 has 4 divisors (see below), whose sum is σ = 3218316534. Its totient is φ = 1072772176.

The previous prime is 2145544343. The next prime is 2145544363. The reversal of 2145544354 is 4534455412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1766268729 + 379275625 = 42027^2 + 19475^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536386087 + ... + 536386090.

Almost surely, 2^2145544354 is an apocalyptic number.

2145544354 is a deficient number, since it is larger than the sum of its proper divisors (1072772180).

2145544354 is a wasteful number, since it uses less digits than its factorization.

2145544354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072772179.

The product of its digits is 192000, while the sum is 37.

The square root of 2145544354 is about 46320.0210923959. The cubic root of 2145544354 is about 1289.7706769410.

Adding to 2145544354 its reverse (4534455412), we get a palindrome (6679999766).

The spelling of 2145544354 in words is "two billion, one hundred forty-five million, five hundred forty-four thousand, three hundred fifty-four".