1906404984 has 112 divisors (see below), whose sum is σ = 5846719320. Its totient is φ = 577679040.

The previous prime is 1906404971. The next prime is 1906405019. The reversal of 1906404984 is 4894046091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 49294 + ... + 79010.

Almost surely, 2^1906404984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906404984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2923359660).

1906404984 is an abundant number, since it is smaller than the sum of its proper divisors (3940314336).

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

1906404984 is a wasteful number, since it uses less digits than its factorization.

1906404984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29752 (or 29733 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1906404984 is about 43662.3978269632. The cubic root of 1906404984 is about 1239.9525181264.

The spelling of 1906404984 in words is "one billion, nine hundred six million, four hundred four thousand, nine hundred eighty-four".