1356965980 has 36 divisors (see below), whose sum is σ = 2879708328. Its totient is φ = 537116160.

The previous prime is 1356965977. The next prime is 1356966019. The reversal of 1356965980 is 895696531.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184575 + ... + 191785.

It is an arithmetic number, because the mean of its divisors is an integer number (79991898).

Almost surely, 2^1356965980 is an apocalyptic number.

1356965980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356965980 is an abundant number, since it is smaller than the sum of its proper divisors (1522742348).

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

1356965980 is an equidigital number, since it uses as much as digits as its factorization.

1356965980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414 (or 7315 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 1356965980 is about 36837.0191519346. The cubic root of 1356965980 is about 1107.1071440955.

The spelling of 1356965980 in words is "one billion, three hundred fifty-six million, nine hundred sixty-five thousand, nine hundred eighty".