1968450121 has 8 divisors (see below), whose sum is σ = 2216671488. Its totient is φ = 1731774000.

The previous prime is 1968450109. The next prime is 1968450131. The reversal of 1968450121 is 1210548691.

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

It is not a de Polignac number, because 1968450121 - 2⁷ = 1968449993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968450131) 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, 2885950 + ... + 2886631.

It is an arithmetic number, because the mean of its divisors is an integer number (277083936).

Almost surely, 2^1968450121 is an apocalyptic number.

1968450121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1968450121 is a deficient number, since it is larger than the sum of its proper divisors (248221367).

1968450121 is a wasteful number, since it uses less digits than its factorization.

1968450121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772623.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1968450121 is about 44367.2189910524. The cubic root of 1968450121 is about 1253.2608452603.

The spelling of 1968450121 in words is "one billion, nine hundred sixty-eight million, four hundred fifty thousand, one hundred twenty-one".