1091919102 has 8 divisors (see below), whose sum is σ = 2183838216. Its totient is φ = 363973032.

The previous prime is 1091919097. The next prime is 1091919131. The reversal of 1091919102 is 2019191901.

It is a sphenic number, since it is the product of 3 distinct primes.

1091919102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90993253 + ... + 90993264.

It is an arithmetic number, because the mean of its divisors is an integer number (272979777).

Almost surely, 2^1091919102 is an apocalyptic number.

1091919102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1091919102 is a wasteful number, since it uses less digits than its factorization.

1091919102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181986522.

The product of its (nonzero) digits is 1458, while the sum is 33.

The square root of 1091919102 is about 33044.1992186223. The cubic root of 1091919102 is about 1029.7460969661.

The spelling of 1091919102 in words is "one billion, ninety-one million, nine hundred nineteen thousand, one hundred two".