1369868649 has 16 divisors (see below), whose sum is σ = 1876928832. Its totient is φ = 888055488.

The previous prime is 1369868597. The next prime is 1369868651. The reversal of 1369868649 is 9468689631.

It is not a de Polignac number, because 1369868649 - 2²⁴ = 1353091433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1369868592 and 1369868601.

It is not an unprimeable number, because it can be changed into a prime (1369868699) 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, 353607 + ... + 357459.

It is an arithmetic number, because the mean of its divisors is an integer number (117308052).

Almost surely, 2^1369868649 is an apocalyptic number.

It is an amenable number.

1369868649 is a deficient number, since it is larger than the sum of its proper divisors (507060183).

1369868649 is a wasteful number, since it uses less digits than its factorization.

1369868649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096.

The product of its digits is 13436928, while the sum is 60.

The square root of 1369868649 is about 37011.7366385313. The cubic root of 1369868649 is about 1110.6050455136.

The spelling of 1369868649 in words is "one billion, three hundred sixty-nine million, eight hundred sixty-eight thousand, six hundred forty-nine".