1309776228774 has 24 divisors (see below), whose sum is σ = 3056144534352. Its totient is φ = 403008070320.

The previous prime is 1309776228769. The next prime is 1309776228797. The reversal of 1309776228774 is 4778226779031.

1309776228774 is a `hidden beast` number, since 130 + 97 + 76 + 2 + 287 + 74 = 666.

It is a super-2 number, since 2×1309776228774² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2798666922 + ... + 2798667389.

It is an arithmetic number, because the mean of its divisors is an integer number (127339355598).

Almost surely, 2^{1309776228774} is an apocalyptic number.

1309776228774 is an abundant number, since it is smaller than the sum of its proper divisors (1746368305578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1309776228774 is a wasteful number, since it uses less digits than its factorization.

1309776228774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597334332 (or 5597334329 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 63.

The spelling of 1309776228774 in words is "one trillion, three hundred nine billion, seven hundred seventy-six million, two hundred twenty-eight thousand, seven hundred seventy-four".