1195249981440 has 384 divisors, whose sum is σ = 4062266208000. Its totient is φ = 299171708928.

The previous prime is 1195249981439. The next prime is 1195249981447. The reversal of 1195249981440 is 441899425911.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1195249981447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63611727 + ... + 63630513.

It is an arithmetic number, because the mean of its divisors is an integer number (10578818250).

Almost surely, 2^{1195249981440} is an apocalyptic number.

1195249981440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1195249981440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031133104000).

1195249981440 is an abundant number, since it is smaller than the sum of its proper divisors (2867016226560).

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

1195249981440 is a wasteful number, since it uses less digits than its factorization.

1195249981440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18945 (or 18925 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 1195249981440 in words is "one trillion, one hundred ninety-five billion, two hundred forty-nine million, nine hundred eighty-one thousand, four hundred forty".