1366955904 has 64 divisors (see below), whose sum is σ = 3648401280. Its totient is φ = 453465600.

The previous prime is 1366955897. The next prime is 1366955921. The reversal of 1366955904 is 4095596631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 72589 + ... + 89459.

It is an arithmetic number, because the mean of its divisors is an integer number (57006270).

Almost surely, 2^1366955904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366955904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824200640).

1366955904 is an abundant number, since it is smaller than the sum of its proper divisors (2281445376).

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

1366955904 is a wasteful number, since it uses less digits than its factorization.

1366955904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17099 (or 17087 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 1366955904 is about 36972.3667622185. The cubic root of 1366955904 is about 1109.8173289203.

The spelling of 1366955904 in words is "one billion, three hundred sixty-six million, nine hundred fifty-five thousand, nine hundred four".