1539713249 has 4 divisors (see below), whose sum is σ = 1545567936. Its totient is φ = 1533858564.

The previous prime is 1539713207. The next prime is 1539713257. The reversal of 1539713249 is 9423179351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1539713249 - 2²⁴ = 1522936033 is a prime.

It is a super-2 number, since 2×1539713249² = 4741433778292272002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1539712249) 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, 2926949 + ... + 2927474.

It is an arithmetic number, because the mean of its divisors is an integer number (386391984).

Almost surely, 2^1539713249 is an apocalyptic number.

It is an amenable number.

1539713249 is a deficient number, since it is larger than the sum of its proper divisors (5854687).

1539713249 is an equidigital number, since it uses as much as digits as its factorization.

1539713249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854686.

The product of its digits is 204120, while the sum is 44.

The square root of 1539713249 is about 39239.1800245622. The cubic root of 1539713249 is about 1154.7286704841.

The spelling of 1539713249 in words is "one billion, five hundred thirty-nine million, seven hundred thirteen thousand, two hundred forty-nine".