1089650940 has 96 divisors (see below), whose sum is σ = 3546063360. Its totient is φ = 244836096.

The previous prime is 1089650927. The next prime is 1089650957. The reversal of 1089650940 is 490569801.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1089650892 and 1089650901.

It is a congruent number.

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, 2794 + ... + 46766.

It is an arithmetic number, because the mean of its divisors is an integer number (36938160).

Almost surely, 2^1089650940 is an apocalyptic number.

1089650940 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 1089650940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773031680).

1089650940 is an abundant number, since it is smaller than the sum of its proper divisors (2456412420).

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

1089650940 is a wasteful number, since it uses less digits than its factorization.

1089650940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44051 (or 44049 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1089650940 is about 33009.8612538738. The cubic root of 1089650940 is about 1029.0325978183.

The spelling of 1089650940 in words is "one billion, eighty-nine million, six hundred fifty thousand, nine hundred forty".