1356766749 has 12 divisors (see below), whose sum is σ = 2110526236. Its totient is φ = 834933312.

The previous prime is 1356766729. The next prime is 1356766771. The reversal of 1356766749 is 9476676531.

It is a happy number.

1356766749 is a `hidden beast` number, since 1 + 3 + 567 + 6 + 6 + 74 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 357890724 + 998876025 = 18918^2 + 31605^2 .

It is not a de Polignac number, because 1356766749 - 2⁸ = 1356766493 is a prime.

It is a super-2 number, since 2×1356766749² = 3681632022384058002, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1356766695 and 1356766704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356766729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5798032 + ... + 5798265.

Almost surely, 2^1356766749 is an apocalyptic number.

It is an amenable number.

1356766749 is a deficient number, since it is larger than the sum of its proper divisors (753759487).

1356766749 is a wasteful number, since it uses less digits than its factorization.

1356766749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11596316 (or 11596313 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 1356766749 is about 36834.3148300603. The cubic root of 1356766749 is about 1107.0529592787.

The spelling of 1356766749 in words is "one billion, three hundred fifty-six million, seven hundred sixty-six thousand, seven hundred forty-nine".