1890146520 has 48 divisors (see below), whose sum is σ = 6142977360. Its totient is φ = 504038976.

The previous prime is 1890146519. The next prime is 1890146527. The reversal of 1890146520 is 256410981.

1890146520 is a `hidden beast` number, since 1 + 8 + 90 + 1 + 46 + 520 = 666.

It is a super-2 number, since 2×1890146520² = 7145307734136220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890146527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2624844 + ... + 2625563.

It is an arithmetic number, because the mean of its divisors is an integer number (127978695).

Almost surely, 2^1890146520 is an apocalyptic number.

1890146520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1890146520 is an abundant number, since it is smaller than the sum of its proper divisors (4252830840).

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

1890146520 is a wasteful number, since it uses less digits than its factorization.

1890146520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250424 (or 5250417 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1890146520 is about 43475.8153460059. The cubic root of 1890146520 is about 1236.4175388906.

The spelling of 1890146520 in words is "one billion, eight hundred ninety million, one hundred forty-six thousand, five hundred twenty".