1020489696 has 144 divisors (see below), whose sum is σ = 3071053440. Its totient is φ = 320544000.

The previous prime is 1020489661. The next prime is 1020489697. The reversal of 1020489696 is 6969840201.

It is a happy number.

1020489696 is a `hidden beast` number, since 102 + 0 + 489 + 69 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020489697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1373101 + ... + 1373843.

It is an arithmetic number, because the mean of its divisors is an integer number (21326760).

Almost surely, 2^1020489696 is an apocalyptic number.

1020489696 is a gapful number since it is divisible by the number (16) 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 1020489696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535526720).

1020489696 is an abundant number, since it is smaller than the sum of its proper divisors (2050563744).

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

1020489696 is a wasteful number, since it uses less digits than its factorization.

1020489696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1020489696 is about 31945.1044136656. The cubic root of 1020489696 is about 1006.7837750012.

The spelling of 1020489696 in words is "one billion, twenty million, four hundred eighty-nine thousand, six hundred ninety-six".