1941649920 has 320 divisors, whose sum is σ = 7884138240. Its totient is φ = 443695104.

The previous prime is 1941649909. The next prime is 1941649933. The reversal of 1941649920 is 299461491.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481834 + ... + 485846.

It is an arithmetic number, because the mean of its divisors is an integer number (24637932).

Almost surely, 2^1941649920 is an apocalyptic number.

1941649920 is a gapful number since it is divisible by the number (10) 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 1941649920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3942069120).

1941649920 is an abundant number, since it is smaller than the sum of its proper divisors (5942488320).

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

1941649920 is an equidigital number, since it uses as much as digits as its factorization.

1941649920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052 (or 4030 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1941649920 is about 44064.1568624659. The cubic root of 1941649920 is about 1247.5471729933.

The spelling of 1941649920 in words is "one billion, nine hundred forty-one million, six hundred forty-nine thousand, nine hundred twenty".