1906723632 has 80 divisors (see below), whose sum is σ = 5380905600. Its totient is φ = 576998400.

The previous prime is 1906723631. The next prime is 1906723649. The reversal of 1906723632 is 2363276091.

It is not an unprimeable number, because it can be changed into a prime (1906723631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463119 + ... + 467217.

It is an arithmetic number, because the mean of its divisors is an integer number (67261320).

Almost surely, 2^1906723632 is an apocalyptic number.

1906723632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906723632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2690452800).

1906723632 is an abundant number, since it is smaller than the sum of its proper divisors (3474181968).

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

1906723632 is a wasteful number, since it uses less digits than its factorization.

1906723632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002 (or 4996 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 1906723632 is about 43666.0466724433. The cubic root of 1906723632 is about 1240.0215986526.

The spelling of 1906723632 in words is "one billion, nine hundred six million, seven hundred twenty-three thousand, six hundred thirty-two".