1920050890 has 64 divisors (see below), whose sum is σ = 3881001600. Its totient is φ = 679643136.

The previous prime is 1920050863. The next prime is 1920050893. The reversal of 1920050890 is 980500291.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1920050893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440341 + ... + 444679.

It is an arithmetic number, because the mean of its divisors is an integer number (60640650).

Almost surely, 2^1920050890 is an apocalyptic number.

1920050890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1920050890 is an abundant number, since it is smaller than the sum of its proper divisors (1960950710).

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

1920050890 is a wasteful number, since it uses less digits than its factorization.

1920050890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1920050890 is about 43818.3852965853. The cubic root of 1920050890 is about 1242.9039833305.

The spelling of 1920050890 in words is "one billion, nine hundred twenty million, fifty thousand, eight hundred ninety".