1121826919640 has 64 divisors (see below), whose sum is σ = 2931987965760. Its totient is φ = 378321016320.

The previous prime is 1121826919627. The next prime is 1121826919657. The reversal of 1121826919640 is 469196281211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32823287 + ... + 32857446.

It is an arithmetic number, because the mean of its divisors is an integer number (45812311965).

Almost surely, 2^{1121826919640} is an apocalyptic number.

1121826919640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121826919640 is an abundant number, since it is smaller than the sum of its proper divisors (1810161046120).

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

1121826919640 is a wasteful number, since it uses less digits than its factorization.

1121826919640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65680812 (or 65680808 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 1121826919640 in words is "one trillion, one hundred twenty-one billion, eight hundred twenty-six million, nine hundred nineteen thousand, six hundred forty".