2145443354 has 4 divisors (see below), whose sum is σ = 3218165034. Its totient is φ = 1072721676.

The previous prime is 2145443353. The next prime is 2145443359. The reversal of 2145443354 is 4533445412.

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., 1103767729 + 1041675625 = 33223^2 + 32275^2 .

It is not an unprimeable number, because it can be changed into a prime (2145443351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536360837 + ... + 536360840.

Almost surely, 2^2145443354 is an apocalyptic number.

2145443354 is a deficient number, since it is larger than the sum of its proper divisors (1072721680).

2145443354 is a wasteful number, since it uses less digits than its factorization.

2145443354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072721679.

The product of its digits is 115200, while the sum is 35.

The square root of 2145443354 is about 46318.9308382653. The cubic root of 2145443354 is about 1289.7504382725.

Adding to 2145443354 its reverse (4533445412), we get a palindrome (6678888766).

The spelling of 2145443354 in words is "two billion, one hundred forty-five million, four hundred forty-three thousand, three hundred fifty-four".