1366739988 has 24 divisors (see below), whose sum is σ = 3189832800. Its totient is φ = 455469600.

The previous prime is 1366739951. The next prime is 1366740049. The reversal of 1366739988 is 8899376631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49338 + ... + 71886.

It is an arithmetic number, because the mean of its divisors is an integer number (132909700).

Almost surely, 2^1366739988 is an apocalyptic number.

It is an amenable number.

1366739988 is an abundant number, since it is smaller than the sum of its proper divisors (1823092812).

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

1366739988 is a wasteful number, since it uses less digits than its factorization.

1366739988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27607 (or 27605 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 60.

The square root of 1366739988 is about 36969.4466823619. The cubic root of 1366739988 is about 1109.7588925227.

The spelling of 1366739988 in words is "one billion, three hundred sixty-six million, seven hundred thirty-nine thousand, nine hundred eighty-eight".