1906771968 has 96 divisors (see below), whose sum is σ = 5648479200. Its totient is φ = 635572224.

The previous prime is 1906771957. The next prime is 1906771987. The reversal of 1906771968 is 8691776091.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38055 + ... + 72537.

It is an arithmetic number, because the mean of its divisors is an integer number (58838325).

Almost surely, 2^1906771968 is an apocalyptic number.

1906771968 is a gapful number since it is divisible by the number (18) 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 1906771968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2824239600).

1906771968 is an abundant number, since it is smaller than the sum of its proper divisors (3741707232).

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

1906771968 is an equidigital number, since it uses as much as digits as its factorization.

1906771968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34514 (or 34488 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 1906771968 is about 43666.6001424430. The cubic root of 1906771968 is about 1240.0320768671.

The spelling of 1906771968 in words is "one billion, nine hundred six million, seven hundred seventy-one thousand, nine hundred sixty-eight".