2738131397 has 4 divisors (see below), whose sum is σ = 2743511340. Its totient is φ = 2732751456.

The previous prime is 2738131379. The next prime is 2738131399. The reversal of 2738131397 is 7931318372.

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 2093428516 + 644702881 = 45754^2 + 25391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2738131397 - 2¹⁶ = 2738065861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2738131399) 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, 2689208 + ... + 2690225.

It is an arithmetic number, because the mean of its divisors is an integer number (685877835).

Almost surely, 2^2738131397 is an apocalyptic number.

It is an amenable number.

2738131397 is a deficient number, since it is larger than the sum of its proper divisors (5379943).

2738131397 is an equidigital number, since it uses as much as digits as its factorization.

2738131397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379942.

The product of its digits is 190512, while the sum is 44.

The square root of 2738131397 is about 52327.1573563862. The cubic root of 2738131397 is about 1399.0012258992.

The spelling of 2738131397 in words is "two billion, seven hundred thirty-eight million, one hundred thirty-one thousand, three hundred ninety-seven".