1011945420 has 96 divisors (see below), whose sum is σ = 3169656000. Its totient is φ = 268019712.

The previous prime is 1011945413. The next prime is 1011945443. The reversal of 1011945420 is 245491101.

1011945420 is a `hidden beast` number, since 1 + 0 + 119 + 4 + 542 + 0 = 666.

1011945420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 74172 + ... + 86748.

It is an arithmetic number, because the mean of its divisors is an integer number (33017250).

Almost surely, 2^1011945420 is an apocalyptic number.

1011945420 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 1011945420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584828000).

1011945420 is an abundant number, since it is smaller than the sum of its proper divisors (2157710580).

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

1011945420 is a wasteful number, since it uses less digits than its factorization.

1011945420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12744 (or 12736 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1011945420 is about 31811.0895758067. The cubic root of 1011945420 is about 1003.9660562695.

The spelling of 1011945420 in words is "one billion, eleven million, nine hundred forty-five thousand, four hundred twenty".