1356645866 has 16 divisors (see below), whose sum is σ = 2268077760. Its totient is φ = 604820160.

The previous prime is 1356645863. The next prime is 1356645887. The reversal of 1356645866 is 6685466531.

It is a super-3 number, since 3×1356645866³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1356645863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049390 + ... + 1050681.

It is an arithmetic number, because the mean of its divisors is an integer number (141754860).

Almost surely, 2^1356645866 is an apocalyptic number.

1356645866 is a deficient number, since it is larger than the sum of its proper divisors (911431894).

1356645866 is a wasteful number, since it uses less digits than its factorization.

1356645866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100109.

The product of its digits is 3110400, while the sum is 50.

The square root of 1356645866 is about 36832.6738915328. The cubic root of 1356645866 is about 1107.0200801668.

The spelling of 1356645866 in words is "one billion, three hundred fifty-six million, six hundred forty-five thousand, eight hundred sixty-six".