1089537944 has 16 divisors (see below), whose sum is σ = 2228600520. Its totient is φ = 495244480.

The previous prime is 1089537941. The next prime is 1089537947. The reversal of 1089537944 is 4497359801.

It is an interprime number because it is at equal distance from previous prime (1089537941) and next prime (1089537947).

It is a junction number, because it is equal to n+sod(n) for n = 1089537892 and 1089537901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089537941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6190469 + ... + 6190644.

Almost surely, 2^1089537944 is an apocalyptic number.

It is an amenable number.

1089537944 is an abundant number, since it is smaller than the sum of its proper divisors (1139062576).

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

1089537944 is a wasteful number, since it uses less digits than its factorization.

1089537944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12381130 (or 12381126 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1089537944 is about 33008.1496603490. The cubic root of 1089537944 is about 1028.9970266145.

The spelling of 1089537944 in words is "one billion, eighty-nine million, five hundred thirty-seven thousand, nine hundred forty-four".