1091046919650 has 48 divisors (see below), whose sum is σ = 2707510562400. Its totient is φ = 290761522560.

The previous prime is 1091046919643. The next prime is 1091046919663. The reversal of 1091046919650 is 569196401901.

It is a super-2 number, since 2×1091046919650² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1091046919593 and 1091046919602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2066395 + ... + 2540094.

It is an arithmetic number, because the mean of its divisors is an integer number (56406470050).

Almost surely, 2^{1091046919650} is an apocalyptic number.

1091046919650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1091046919650 is an abundant number, since it is smaller than the sum of its proper divisors (1616463642750).

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

1091046919650 is a wasteful number, since it uses less digits than its factorization.

1091046919650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608083 (or 4608078 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 1091046919650 in words is "one trillion, ninety-one billion, forty-six million, nine hundred nineteen thousand, six hundred fifty".