1187360640 has 128 divisors (see below), whose sum is σ = 4205296800. Its totient is φ = 316624896.

The previous prime is 1187360639. The next prime is 1187360683. The reversal of 1187360640 is 460637811.

1187360640 is a `hidden beast` number, since 1 + 1 + 8 + 7 + 3 + 6 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1187360595 and 1187360604.

It is a congruent number.

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, 17077 + ... + 51636.

Almost surely, 2^1187360640 is an apocalyptic number.

1187360640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1187360640 is an abundant number, since it is smaller than the sum of its proper divisors (3017936160).

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

1187360640 is an equidigital number, since it uses as much as digits as its factorization.

1187360640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68741 (or 68723 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1187360640 is about 34458.0997734930. The cubic root of 1187360640 is about 1058.9144695747.

The spelling of 1187360640 in words is "one billion, one hundred eighty-seven million, three hundred sixty thousand, six hundred forty".