1187375616 has 240 divisors, whose sum is σ = 3960335808. Its totient is φ = 335462400.

The previous prime is 1187375603. The next prime is 1187375633. The reversal of 1187375616 is 6165737811.

1187375616 is a `hidden beast` number, since 1 + 1 + 87 + 3 + 7 + 561 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4225396 + ... + 4225676.

Almost surely, 2^1187375616 is an apocalyptic number.

1187375616 is a gapful number since it is divisible by the number (16) 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 1187375616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1980167904).

1187375616 is an abundant number, since it is smaller than the sum of its proper divisors (2772960192).

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

1187375616 is a wasteful number, since it uses less digits than its factorization.

1187375616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 424 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 1187375616 is about 34458.3170802058. The cubic root of 1187375616 is about 1058.9189215320.

The spelling of 1187375616 in words is "one billion, one hundred eighty-seven million, three hundred seventy-five thousand, six hundred sixteen".