2798648137 has 4 divisors (see below), whose sum is σ = 2963274516. Its totient is φ = 2634021760.

The previous prime is 2798648129. The next prime is 2798648141. The reversal of 2798648137 is 7318468972.

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 1550863161 + 1247784976 = 39381^2 + 35324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2798648137 - 2³ = 2798648129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2798648107) 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, 82313164 + ... + 82313197.

It is an arithmetic number, because the mean of its divisors is an integer number (740818629).

Almost surely, 2^2798648137 is an apocalyptic number.

It is an amenable number.

2798648137 is a deficient number, since it is larger than the sum of its proper divisors (164626379).

2798648137 is a wasteful number, since it uses less digits than its factorization.

2798648137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164626378.

The product of its digits is 4064256, while the sum is 55.

The square root of 2798648137 is about 52902.2507744236. The cubic root of 2798648137 is about 1409.2328769832.

The spelling of 2798648137 in words is "two billion, seven hundred ninety-eight million, six hundred forty-eight thousand, one hundred thirty-seven".