2145544246 has 4 divisors (see below), whose sum is σ = 3218316372. Its totient is φ = 1072772122.

The previous prime is 2145544199. The next prime is 2145544301. The reversal of 2145544246 is 6424455412.

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

It is a super-2 number, since 2×2145544246² = 9206720223087417032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536386060 + ... + 536386063.

It is an arithmetic number, because the mean of its divisors is an integer number (804579093).

Almost surely, 2^2145544246 is an apocalyptic number.

2145544246 is a deficient number, since it is larger than the sum of its proper divisors (1072772126).

2145544246 is a wasteful number, since it uses less digits than its factorization.

2145544246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072772125.

The product of its digits is 153600, while the sum is 37.

The square root of 2145544246 is about 46320.0199265933. The cubic root of 2145544246 is about 1289.7706553000.

Adding to 2145544246 its reverse (6424455412), we get a palindrome (8569999658).

The spelling of 2145544246 in words is "two billion, one hundred forty-five million, five hundred forty-four thousand, two hundred forty-six".