1900343489 has 8 divisors (see below), whose sum is σ = 2079369120. Its totient is φ = 1722362400.

The previous prime is 1900343483. The next prime is 1900343491. The reversal of 1900343489 is 9843430091.

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

It is not a de Polignac number, because 1900343489 - 2¹² = 1900339393 is a prime.

It is a super-2 number, since 2×1900343489² = 7222610752369386242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1900343483) by changing a digit.

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, 257324 + ... + 264605.

It is an arithmetic number, because the mean of its divisors is an integer number (259921140).

Almost surely, 2^1900343489 is an apocalyptic number.

It is an amenable number.

1900343489 is a deficient number, since it is larger than the sum of its proper divisors (179025631).

1900343489 is a wasteful number, since it uses less digits than its factorization.

1900343489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522271.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1900343489 is about 43592.9293463974. The cubic root of 1900343489 is about 1238.6369624199.

The spelling of 1900343489 in words is "one billion, nine hundred million, three hundred forty-three thousand, four hundred eighty-nine".