1349840523 has 4 divisors (see below), whose sum is σ = 1799787368. Its totient is φ = 899893680.

The previous prime is 1349840521. The next prime is 1349840551. The reversal of 1349840523 is 3250489431.

1349840523 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1349840523 - 2¹ = 1349840521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1349840521) 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, 224973418 + ... + 224973423.

It is an arithmetic number, because the mean of its divisors is an integer number (449946842).

Almost surely, 2^1349840523 is an apocalyptic number.

1349840523 is a deficient number, since it is larger than the sum of its proper divisors (449946845).

1349840523 is an equidigital number, since it uses as much as digits as its factorization.

1349840523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449946844.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1349840523 is about 36740.1758705644. The cubic root of 1349840523 is about 1105.1659280049.

The spelling of 1349840523 in words is "one billion, three hundred forty-nine million, eight hundred forty thousand, five hundred twenty-three".