1356389955 has 80 divisors (see below), whose sum is σ = 2571782400. Its totient is φ = 682032960.

The previous prime is 1356389941. The next prime is 1356389981. The reversal of 1356389955 is 5599836531.

It is a happy number.

It is not a de Polignac number, because 1356389955 - 2¹⁵ = 1356357187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2762260 + ... + 2762750.

It is an arithmetic number, because the mean of its divisors is an integer number (32147280).

Almost surely, 2^1356389955 is an apocalyptic number.

1356389955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1356389955 is a deficient number, since it is larger than the sum of its proper divisors (1215392445).

1356389955 is a wasteful number, since it uses less digits than its factorization.

1356389955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 877 counting only the distinct ones).

The product of its digits is 4374000, while the sum is 54.

The square root of 1356389955 is about 36829.1997605161. The cubic root of 1356389955 is about 1106.9504681828.

The spelling of 1356389955 in words is "one billion, three hundred fifty-six million, three hundred eighty-nine thousand, nine hundred fifty-five".