1343735649 has 15 divisors (see below), whose sum is σ = 2007801763. Its totient is φ = 895603824.

The previous prime is 1343735629. The next prime is 1343735669. The reversal of 1343735649 is 9465373431.

The square root of 1343735649 is 36657.

It is a perfect power (a square), and thus also a powerful number.

1343735649 is a `hidden beast` number, since 13 + 4 + 3 + 73 + 564 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1343735629) and next prime (1343735669).

It can be written as a sum of positive squares in only one way, i.e., 144360225 + 1199375424 = 12015^2 + 34632^2 .

It is not a de Polignac number, because 1343735649 - 2⁷ = 1343735521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343735609) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 327877 + ... + 331949.

Almost surely, 2^1343735649 is an apocalyptic number.

1343735649 is the 36657-th square number.

1343735649 is the 18329-th centered octagonal number.

It is an amenable number.

1343735649 is a deficient number, since it is larger than the sum of its proper divisors (664066114).

1343735649 is an frugal number, since it uses more digits than its factorization.

1343735649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158 (or 4076 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The cubic root of 1343735649 is about 1103.4973122006.

The spelling of 1343735649 in words is "one billion, three hundred forty-three million, seven hundred thirty-five thousand, six hundred forty-nine".