1368123920 has 40 divisors (see below), whose sum is σ = 3228376704. Its totient is φ = 539079552.

The previous prime is 1368123917. The next prime is 1368123949. The reversal of 1368123920 is 293218631.

It is a tau number, because it is divible by the number of its divisors (40).

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, 122264 + ... + 132983.

Almost surely, 2^1368123920 is an apocalyptic number.

1368123920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1368123920 is an abundant number, since it is smaller than the sum of its proper divisors (1860252784).

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

1368123920 is a wasteful number, since it uses less digits than its factorization.

1368123920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255327 (or 255321 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1368123920 is about 36988.1591864207. The cubic root of 1368123920 is about 1110.1333389586.

The spelling of 1368123920 in words is "one billion, three hundred sixty-eight million, one hundred twenty-three thousand, nine hundred twenty".