1187685012 has 12 divisors (see below), whose sum is σ = 2771265056. Its totient is φ = 395895000.

The previous prime is 1187685011. The next prime is 1187685013. The reversal of 1187685012 is 2105867811.

It is an interprime number because it is at equal distance from previous prime (1187685011) and next prime (1187685013).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187685011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 49486864 + ... + 49486887.

Almost surely, 2^1187685012 is an apocalyptic number.

1187685012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1187685012 is an abundant number, since it is smaller than the sum of its proper divisors (1583580044).

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

1187685012 is a wasteful number, since it uses less digits than its factorization.

1187685012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98973758 (or 98973756 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 39.

The square root of 1187685012 is about 34462.8062119149. The cubic root of 1187685012 is about 1059.0108881688.

The spelling of 1187685012 in words is "one billion, one hundred eighty-seven million, six hundred eighty-five thousand, twelve".