1368123919 has 8 divisors (see below), whose sum is σ = 1393457040. Its totient is φ = 1342862400.

The previous prime is 1368123917. The next prime is 1368123949. The reversal of 1368123919 is 9193218631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1368123919 - 2¹ = 1368123917 is a prime.

It is a super-2 number, since 2×1368123919² = 3743526115479837122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368123917) 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, 21459 + ... + 56539.

It is an arithmetic number, because the mean of its divisors is an integer number (174182130).

Almost surely, 2^1368123919 is an apocalyptic number.

1368123919 is a deficient number, since it is larger than the sum of its proper divisors (25333121).

1368123919 is an equidigital number, since it uses as much as digits as its factorization.

1368123919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35801.

The product of its digits is 69984, while the sum is 43.

The square root of 1368123919 is about 36988.1591729029. The cubic root of 1368123919 is about 1110.1333386881.

The spelling of 1368123919 in words is "one billion, three hundred sixty-eight million, one hundred twenty-three thousand, nine hundred nineteen".