1188921244380 has 24 divisors (see below), whose sum is σ = 3328979484432. Its totient is φ = 317045665152.

The previous prime is 1188921244367. The next prime is 1188921244411. The reversal of 1188921244380 is 834421298811.

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, 9907676977 + ... + 9907677096.

It is an arithmetic number, because the mean of its divisors is an integer number (138707478518).

Almost surely, 2^{1188921244380} is an apocalyptic number.

1188921244380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1188921244380 is an abundant number, since it is smaller than the sum of its proper divisors (2140058240052).

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

1188921244380 is a wasteful number, since it uses less digits than its factorization.

1188921244380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19815354085 (or 19815354083 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The spelling of 1188921244380 in words is "one trillion, one hundred eighty-eight billion, nine hundred twenty-one million, two hundred forty-four thousand, three hundred eighty".