1356778422 has 48 divisors (see below), whose sum is σ = 3020958720. Its totient is φ = 439876656.

The previous prime is 1356778421. The next prime is 1356778439. The reversal of 1356778422 is 2248776531.

1356778422 is a `hidden beast` number, since 1 + 3 + 567 + 7 + 84 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356778421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132979 + ... + 142817.

It is an arithmetic number, because the mean of its divisors is an integer number (62936640).

Almost surely, 2^1356778422 is an apocalyptic number.

1356778422 is an abundant number, since it is smaller than the sum of its proper divisors (1664180298).

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

1356778422 is a wasteful number, since it uses less digits than its factorization.

1356778422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057 (or 10054 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 1356778422 is about 36834.4732825108. The cubic root of 1356778422 is about 1107.0561341286.

The spelling of 1356778422 in words is "one billion, three hundred fifty-six million, seven hundred seventy-eight thousand, four hundred twenty-two".