1368023538 has 16 divisors (see below), whose sum is σ = 3126911040. Its totient is φ = 390863856.

The previous prime is 1368023537. The next prime is 1368023549. The reversal of 1368023538 is 8353208631.

It is a super-3 number, since 3×1368023538³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1368023496 and 1368023505.

It is not an unprimeable number, because it can be changed into a prime (1368023537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16285953 + ... + 16286036.

It is an arithmetic number, because the mean of its divisors is an integer number (195431940).

Almost surely, 2^1368023538 is an apocalyptic number.

1368023538 is an abundant number, since it is smaller than the sum of its proper divisors (1758887502).

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

1368023538 is a wasteful number, since it uses less digits than its factorization.

1368023538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32572001.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1368023538 is about 36986.8022137627. The cubic root of 1368023538 is about 1110.1061873902.

The spelling of 1368023538 in words is "one billion, three hundred sixty-eight million, twenty-three thousand, five hundred thirty-eight".