1187538245472 has 96 divisors (see below), whose sum is σ = 3218129060832. Its totient is φ = 383151734784.

The previous prime is 1187538245363. The next prime is 1187538245473. The reversal of 1187538245472 is 2745428357811.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1187538245472² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187538245473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180603 + ... + 1551674.

It is an arithmetic number, because the mean of its divisors is an integer number (33522177717).

Almost surely, 2^{1187538245472} is an apocalyptic number.

1187538245472 is a gapful number since it is divisible by the number (12) 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 1187538245472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609064530416).

1187538245472 is an abundant number, since it is smaller than the sum of its proper divisors (2030590815360).

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

1187538245472 is a wasteful number, since it uses less digits than its factorization.

1187538245472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732520 (or 1732512 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 57.

The spelling of 1187538245472 in words is "one trillion, one hundred eighty-seven billion, five hundred thirty-eight million, two hundred forty-five thousand, four hundred seventy-two".