1890240105 has 16 divisors (see below), whose sum is σ = 3257029440. Its totient is φ = 930579648.

The previous prime is 1890240089. The next prime is 1890240133. The reversal of 1890240105 is 5010420981.

It is a happy number.

It is not a de Polignac number, because 1890240105 - 2⁴ = 1890240089 is a prime.

It is a super-2 number, since 2×1890240105² = 7146015309100822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4846575 + ... + 4846964.

It is an arithmetic number, because the mean of its divisors is an integer number (203564340).

Almost surely, 2^1890240105 is an apocalyptic number.

1890240105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1890240105 is a deficient number, since it is larger than the sum of its proper divisors (1366789335).

1890240105 is a wasteful number, since it uses less digits than its factorization.

1890240105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9693560.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1890240105 is about 43476.8916207219. The cubic root of 1890240105 is about 1236.4379444032.

The spelling of 1890240105 in words is "one billion, eight hundred ninety million, two hundred forty thousand, one hundred five".