1187659968 has 112 divisors (see below), whose sum is σ = 3546408960. Its totient is φ = 347468800.

The previous prime is 1187659951. The next prime is 1187660021. The reversal of 1187659968 is 8699567811.

It is a super-2 number, since 2×1187659968² = 2821072399179522048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51553 + ... + 70943.

Almost surely, 2^1187659968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1187659968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773204480).

1187659968 is an abundant number, since it is smaller than the sum of its proper divisors (2358748992).

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

1187659968 is a wasteful number, since it uses less digits than its factorization.

1187659968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446 (or 19436 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 60.

The square root of 1187659968 is about 34462.4428617589. The cubic root of 1187659968 is about 1059.0034445411.

The spelling of 1187659968 in words is "one billion, one hundred eighty-seven million, six hundred fifty-nine thousand, nine hundred sixty-eight".