1020390180 has 48 divisors (see below), whose sum is σ = 2858936640. Its totient is φ = 271928448.

The previous prime is 1020390139. The next prime is 1020390223. The reversal of 1020390180 is 810930201.

It is a super-2 number, since 2×1020390180² = 2082392238880864800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020390180.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107466 + ... + 116574.

It is an arithmetic number, because the mean of its divisors is an integer number (59561180).

Almost surely, 2^1020390180 is an apocalyptic number.

1020390180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020390180 is an abundant number, since it is smaller than the sum of its proper divisors (1838546460).

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

1020390180 is a wasteful number, since it uses less digits than its factorization.

1020390180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988 (or 10986 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1020390180 is about 31943.5467661310. The cubic root of 1020390180 is about 1006.7510474615.

The spelling of 1020390180 in words is "one billion, twenty million, three hundred ninety thousand, one hundred eighty".