1089861750 has 64 divisors (see below), whose sum is σ = 3022568640. Its totient is φ = 290628000.

The previous prime is 1089861733. The next prime is 1089861757. The reversal of 1089861750 is 571689801.

It is a super-2 number, since 2×1089861750² = 2375597268226125000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1089861696 and 1089861705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089861757) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 73981 + ... + 87480.

It is an arithmetic number, because the mean of its divisors is an integer number (47227635).

Almost surely, 2^1089861750 is an apocalyptic number.

1089861750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089861750 is an abundant number, since it is smaller than the sum of its proper divisors (1932706890).

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

1089861750 is a wasteful number, since it uses less digits than its factorization.

1089861750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161487 (or 161471 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 1089861750 is about 33013.0542361654. The cubic root of 1089861750 is about 1029.0989543508.

The spelling of 1089861750 in words is "one billion, eighty-nine million, eight hundred sixty-one thousand, seven hundred fifty".