1091162628 has 36 divisors (see below), whose sum is σ = 2903387760. Its totient is φ = 344577456.

The previous prime is 1091162627. The next prime is 1091162651. The reversal of 1091162628 is 8262611901.

1091162628 is a `hidden beast` number, since 1 + 0 + 9 + 1 + 1 + 626 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1091162592 and 1091162601.

It is not an unprimeable number, because it can be changed into a prime (1091162623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 796950 + ... + 798317.

It is an arithmetic number, because the mean of its divisors is an integer number (80649660).

Almost surely, 2^1091162628 is an apocalyptic number.

1091162628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1091162628 is an abundant number, since it is smaller than the sum of its proper divisors (1812225132).

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

1091162628 is a wasteful number, since it uses less digits than its factorization.

1091162628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595296 (or 1595291 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1091162628 is about 33032.7508391293. The cubic root of 1091162628 is about 1029.5082417054.

The spelling of 1091162628 in words is "one billion, ninety-one million, one hundred sixty-two thousand, six hundred twenty-eight".