1091938292920 has 32 divisors (see below), whose sum is σ = 2471062684320. Its totient is φ = 434250601600.

The previous prime is 1091938292917. The next prime is 1091938292923. The reversal of 1091938292920 is 292928391901.

1091938292920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1091938292917) and next prime (1091938292923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091938292923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78890356 + ... + 78904195.

It is an arithmetic number, because the mean of its divisors is an integer number (77220708885).

Almost surely, 2^{1091938292920} is an apocalyptic number.

1091938292920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1091938292920 is an abundant number, since it is smaller than the sum of its proper divisors (1379124391400).

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

1091938292920 is a wasteful number, since it uses less digits than its factorization.

1091938292920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157794735 (or 157794731 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 1091938292920 in words is "one trillion, ninety-one billion, nine hundred thirty-eight million, two hundred ninety-two thousand, nine hundred twenty".