1091924955 has 80 divisors (see below), whose sum is σ = 2152770048. Its totient is φ = 525096000.

The previous prime is 1091924903. The next prime is 1091924963. The reversal of 1091924955 is 5594291901.

It is not a de Polignac number, because 1091924955 - 2¹⁸ = 1091662811 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1091924955.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 582670 + ... + 584540.

Almost surely, 2^1091924955 is an apocalyptic number.

1091924955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1091924955 is a deficient number, since it is larger than the sum of its proper divisors (1060845093).

1091924955 is a wasteful number, since it uses less digits than its factorization.

1091924955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 1091924955 is about 33044.2877817029. The cubic root of 1091924955 is about 1029.7479368745.

The spelling of 1091924955 in words is "one billion, ninety-one million, nine hundred twenty-four thousand, nine hundred fifty-five".