1187855046 has 24 divisors (see below), whose sum is σ = 2941355664. Its totient is φ = 339387120.

The previous prime is 1187855021. The next prime is 1187855047. The reversal of 1187855046 is 6405587811.

1187855046 is a `hidden beast` number, since 11 + 87 + 8 + 550 + 4 + 6 = 666.

1187855046 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1187855046² = 2821999220615324232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1187854992 and 1187855010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187855047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4713585 + ... + 4713836.

It is an arithmetic number, because the mean of its divisors is an integer number (122556486).

Almost surely, 2^1187855046 is an apocalyptic number.

1187855046 is an abundant number, since it is smaller than the sum of its proper divisors (1753500618).

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

1187855046 is a wasteful number, since it uses less digits than its factorization.

1187855046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427436 (or 9427433 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The square root of 1187855046 is about 34465.2730440367. The cubic root of 1187855046 is about 1059.0614232470.

The spelling of 1187855046 in words is "one billion, one hundred eighty-seven million, eight hundred fifty-five thousand, forty-six".