1089797436 has 384 divisors, whose sum is σ = 3713024000. Its totient is φ = 274337280.

The previous prime is 1089797347. The next prime is 1089797483. The reversal of 1089797436 is 6347979801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14928696 + ... + 14928768.

Almost surely, 2^1089797436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089797436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1856512000).

1089797436 is an abundant number, since it is smaller than the sum of its proper divisors (2623226564).

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

1089797436 is a wasteful number, since it uses less digits than its factorization.

1089797436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1089797436 is about 33012.0801525745. The cubic root of 1089797436 is about 1029.0787111802.

The spelling of 1089797436 in words is "one billion, eighty-nine million, seven hundred ninety-seven thousand, four hundred thirty-six".