1366229749 has 16 divisors (see below), whose sum is σ = 1406160000. Its totient is φ = 1326985920.

The previous prime is 1366229743. The next prime is 1366229779. The reversal of 1366229749 is 9479226631.

It is a cyclic number.

It is not a de Polignac number, because 1366229749 - 2²⁵ = 1332675317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366229743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2280552 + ... + 2281150.

It is an arithmetic number, because the mean of its divisors is an integer number (87885000).

Almost surely, 2^1366229749 is an apocalyptic number.

It is an amenable number.

1366229749 is a deficient number, since it is larger than the sum of its proper divisors (39930251).

1366229749 is a wasteful number, since it uses less digits than its factorization.

1366229749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068.

The product of its digits is 979776, while the sum is 49.

The square root of 1366229749 is about 36962.5452180988. The cubic root of 1366229749 is about 1109.6207748726.

The spelling of 1366229749 in words is "one billion, three hundred sixty-six million, two hundred twenty-nine thousand, seven hundred forty-nine".