2491733338 has 4 divisors (see below), whose sum is σ = 3737600010. Its totient is φ = 1245866668.

The previous prime is 2491733329. The next prime is 2491733339. The reversal of 2491733338 is 8333371942.

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., 2281686289 + 210047049 = 47767^2 + 14493^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2491733294 and 2491733303.

It is not an unprimeable number, because it can be changed into a prime (2491733339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622933333 + ... + 622933336.

Almost surely, 2^2491733338 is an apocalyptic number.

2491733338 is a deficient number, since it is larger than the sum of its proper divisors (1245866672).

2491733338 is a wasteful number, since it uses less digits than its factorization.

2491733338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245866671.

The product of its digits is 326592, while the sum is 43.

The square root of 2491733338 is about 49917.2649290804. The cubic root of 2491733338 is about 1355.7112115348.

The spelling of 2491733338 in words is "two billion, four hundred ninety-one million, seven hundred thirty-three thousand, three hundred thirty-eight".