1438299245 has 4 divisors (see below), whose sum is σ = 1725959100. Its totient is φ = 1150639392.

The previous prime is 1438299241. The next prime is 1438299253. The reversal of 1438299245 is 5429928341.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 958645444 + 479653801 = 30962^2 + 21901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438299245 - 2² = 1438299241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1438299245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438299241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143829920 + ... + 143829929.

It is an arithmetic number, because the mean of its divisors is an integer number (431489775).

Almost surely, 2^1438299245 is an apocalyptic number.

It is an amenable number.

1438299245 is a deficient number, since it is larger than the sum of its proper divisors (287659855).

1438299245 is an equidigital number, since it uses as much as digits as its factorization.

1438299245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287659854.

The product of its digits is 622080, while the sum is 47.

The square root of 1438299245 is about 37924.9158865250. The cubic root of 1438299245 is about 1128.7984840350.

The spelling of 1438299245 in words is "one billion, four hundred thirty-eight million, two hundred ninety-nine thousand, two hundred forty-five".