1366734820 has 48 divisors (see below), whose sum is σ = 3232083456. Its totient is φ = 480960000.

The previous prime is 1366734781. The next prime is 1366734857. The reversal of 1366734820 is 284376631.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93381 + ... + 107020.

It is an arithmetic number, because the mean of its divisors is an integer number (67335072).

Almost surely, 2^1366734820 is an apocalyptic number.

1366734820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366734820 is an abundant number, since it is smaller than the sum of its proper divisors (1865348636).

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

1366734820 is a wasteful number, since it uses less digits than its factorization.

1366734820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200452 (or 200450 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1366734820 is about 36969.3767867407. The cubic root of 1366734820 is about 1109.7574937585.

The spelling of 1366734820 in words is "one billion, three hundred sixty-six million, seven hundred thirty-four thousand, eight hundred twenty".