1906423100 has 18 divisors (see below), whose sum is σ = 4136938344. Its totient is φ = 762569200.

The previous prime is 1906423097. The next prime is 1906423109. The reversal of 1906423100 is 13246091.

It is a super-2 number, since 2×1906423100² = 7268898072427220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1906423100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906423109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9532016 + ... + 9532215.

It is an arithmetic number, because the mean of its divisors is an integer number (229829908).

Almost surely, 2^1906423100 is an apocalyptic number.

1906423100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906423100 is an abundant number, since it is smaller than the sum of its proper divisors (2230515244).

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

1906423100 is a wasteful number, since it uses less digits than its factorization.

1906423100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19064245 (or 19064238 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1906423100 is about 43662.6052818656. The cubic root of 1906423100 is about 1239.9564457473.

Adding to 1906423100 its reverse (13246091), we get a palindrome (1919669191).

The spelling of 1906423100 in words is "one billion, nine hundred six million, four hundred twenty-three thousand, one hundred".