1920210530 has 24 divisors (see below), whose sum is σ = 4020686748. Its totient is φ = 658357728.

The previous prime is 1920210529. The next prime is 1920210541. The reversal of 1920210530 is 350120291.

It can be written as a sum of positive squares in 2 ways, for example, as 1670602129 + 249608401 = 40873^2 + 15799^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1920210496 and 1920210505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1958909 + ... + 1959888.

Almost surely, 2^1920210530 is an apocalyptic number.

1920210530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1920210530 is an abundant number, since it is smaller than the sum of its proper divisors (2100476218).

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

1920210530 is a wasteful number, since it uses less digits than its factorization.

1920210530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918818 (or 3918811 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1920210530 is about 43820.2068685213. The cubic root of 1920210530 is about 1242.9384288920.

The spelling of 1920210530 in words is "one billion, nine hundred twenty million, two hundred ten thousand, five hundred thirty".