1091101920190 has 16 divisors (see below), whose sum is σ = 1966715017920. Its totient is φ = 435833754400.

The previous prime is 1091101920187. The next prime is 1091101920269. The reversal of 1091101920190 is 910291011901.

It is a super-2 number, since 2×1091101920190² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75869161 + ... + 75883540.

It is an arithmetic number, because the mean of its divisors is an integer number (122919688620).

Almost surely, 2^{1091101920190} is an apocalyptic number.

1091101920190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1091101920190 is a deficient number, since it is larger than the sum of its proper divisors (875613097730).

1091101920190 is a wasteful number, since it uses less digits than its factorization.

1091101920190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151753427.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 1091101920190 in words is "one trillion, ninety-one billion, one hundred one million, nine hundred twenty thousand, one hundred ninety".