11739783493 has 4 divisors (see below), whose sum is σ = 11741089900. Its totient is φ = 11738477088.

The previous prime is 11739783467. The next prime is 11739783499. The reversal of 11739783493 is 39438793711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39438793711 = 613 ⋅64337347.

It can be written as a sum of positive squares in 2 ways, for example, as 11195121249 + 544662244 = 105807^2 + 23338^2 .

It is a cyclic number.

It is not a de Polignac number, because 11739783493 - 2³³ = 3149848901 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 (11739783499) 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, 639630 + ... + 657727.

It is an arithmetic number, because the mean of its divisors is an integer number (2935272475).

Almost surely, 2^11739783493 is an apocalyptic number.

It is an amenable number.

11739783493 is a deficient number, since it is larger than the sum of its proper divisors (1306407).

11739783493 is an equidigital number, since it uses as much as digits as its factorization.

11739783493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306406.

The product of its digits is 3429216, while the sum is 55.

The spelling of 11739783493 in words is "eleven billion, seven hundred thirty-nine million, seven hundred eighty-three thousand, four hundred ninety-three".