1343649249 has 8 divisors (see below), whose sum is σ = 1990591520. Its totient is φ = 895766148.

The previous prime is 1343649233. The next prime is 1343649299. The reversal of 1343649249 is 9429463431.

1343649249 is a `hidden beast` number, since 1 + 343 + 64 + 9 + 249 = 666.

It is not a de Polignac number, because 1343649249 - 2⁴ = 1343649233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343649299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24882367 + ... + 24882420.

It is an arithmetic number, because the mean of its divisors is an integer number (248823940).

Almost surely, 2^1343649249 is an apocalyptic number.

It is an amenable number.

1343649249 is a deficient number, since it is larger than the sum of its proper divisors (646942271).

1343649249 is an equidigital number, since it uses as much as digits as its factorization.

1343649249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49764796 (or 49764790 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 1343649249 is about 36655.8214885439. The cubic root of 1343649249 is about 1103.4736606707.

The spelling of 1343649249 in words is "one billion, three hundred forty-three million, six hundred forty-nine thousand, two hundred forty-nine".