1170855138 has 8 divisors (see below), whose sum is σ = 2341710288. Its totient is φ = 390285044.

The previous prime is 1170855131. The next prime is 1170855139. The reversal of 1170855138 is 8315580711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1170855138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1170855096 and 1170855105.

It is not an unprimeable number, because it can be changed into a prime (1170855131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97571256 + ... + 97571267.

It is an arithmetic number, because the mean of its divisors is an integer number (292713786).

Almost surely, 2^1170855138 is an apocalyptic number.

1170855138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1170855138 is a wasteful number, since it uses less digits than its factorization.

1170855138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195142528.

The product of its (nonzero) digits is 33600, while the sum is 39.

The square root of 1170855138 is about 34217.7605637774. The cubic root of 1170855138 is about 1053.9848993320.

The spelling of 1170855138 in words is "one billion, one hundred seventy million, eight hundred fifty-five thousand, one hundred thirty-eight".