1906331740 has 24 divisors (see below), whose sum is σ = 4068927072. Its totient is φ = 750031680.

The previous prime is 1906331729. The next prime is 1906331743. The reversal of 1906331740 is 471336091.

It is a junction number, because it is equal to n+sod(n) for n = 1906331696 and 1906331705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906331743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780064 + ... + 782503.

It is an arithmetic number, because the mean of its divisors is an integer number (169538628).

Almost surely, 2^1906331740 is an apocalyptic number.

1906331740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906331740 is an abundant number, since it is smaller than the sum of its proper divisors (2162595332).

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

1906331740 is a wasteful number, since it uses less digits than its factorization.

1906331740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562637 (or 1562635 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 1906331740 is about 43661.5590651548. The cubic root of 1906331740 is about 1239.9366382816.

The spelling of 1906331740 in words is "one billion, nine hundred six million, three hundred thirty-one thousand, seven hundred forty".