1234853649 has 6 divisors (see below), whose sum is σ = 1783677506. Its totient is φ = 823235760.

The previous prime is 1234853593. The next prime is 1234853671. The reversal of 1234853649 is 9463584321.

1234853649 is a `hidden beast` number, since 123 + 485 + 3 + 6 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1225490049 + 9363600 = 35007^2 + 3060^2 .

It is not a de Polignac number, because 1234853649 - 2¹¹ = 1234851601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234852649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68602972 + ... + 68602989.

Almost surely, 2^1234853649 is an apocalyptic number.

It is an amenable number.

1234853649 is a deficient number, since it is larger than the sum of its proper divisors (548823857).

1234853649 is a wasteful number, since it uses less digits than its factorization.

1234853649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137205967 (or 137205964 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 1234853649 is about 35140.4844730405. The cubic root of 1234853649 is about 1072.8487424407.

The spelling of 1234853649 in words is "one billion, two hundred thirty-four million, eight hundred fifty-three thousand, six hundred forty-nine".