1366172404 has 6 divisors (see below), whose sum is σ = 2390801714. Its totient is φ = 683086200.

The previous prime is 1366172389. The next prime is 1366172413. The reversal of 1366172404 is 4042716631.

It can be written as a sum of positive squares in only one way, i.e., 742671504 + 623500900 = 27252^2 + 24970^2 .

It is a super-3 number, since 3×1366172404³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1366172404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170771547 + ... + 170771554.

Almost surely, 2^1366172404 is an apocalyptic number.

It is an amenable number.

1366172404 is a deficient number, since it is larger than the sum of its proper divisors (1024629310).

1366172404 is a wasteful number, since it uses less digits than its factorization.

1366172404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341543105 (or 341543103 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1366172404 is about 36961.7694922740. The cubic root of 1366172404 is about 1109.6052498865.

The spelling of 1366172404 in words is "one billion, three hundred sixty-six million, one hundred seventy-two thousand, four hundred four".