1197887652 has 144 divisors (see below), whose sum is σ = 3369719808. Its totient is φ = 356451840.

The previous prime is 1197887641. The next prime is 1197887671. The reversal of 1197887652 is 2567887911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3127453 + ... + 3127835.

It is an arithmetic number, because the mean of its divisors is an integer number (23400832).

Almost surely, 2^1197887652 is an apocalyptic number.

1197887652 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 1197887652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684859904).

1197887652 is an abundant number, since it is smaller than the sum of its proper divisors (2171832156).

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

1197887652 is a wasteful number, since it uses less digits than its factorization.

1197887652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 605 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The square root of 1197887652 is about 34610.5136049727. The cubic root of 1197887652 is about 1062.0346738761.

The spelling of 1197887652 in words is "one billion, one hundred ninety-seven million, eight hundred eighty-seven thousand, six hundred fifty-two".