1187453952 has 176 divisors, whose sum is σ = 3640384800. Its totient is φ = 381911040.

The previous prime is 1187453951. The next prime is 1187453983. The reversal of 1187453952 is 2593547811.

It is a junction number, because it is equal to n+sod(n) for n = 1187453898 and 1187453907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187453951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801052 + ... + 802532.

Almost surely, 2^1187453952 is an apocalyptic number.

1187453952 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 1187453952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820192400).

1187453952 is an abundant number, since it is smaller than the sum of its proper divisors (2452930848).

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

1187453952 is a wasteful number, since it uses less digits than its factorization.

1187453952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539 (or 1515 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 1187453952 is about 34459.4537391410. The cubic root of 1187453952 is about 1058.9422080830.

The spelling of 1187453952 in words is "one billion, one hundred eighty-seven million, four hundred fifty-three thousand, nine hundred fifty-two".