1170157947 has 16 divisors (see below), whose sum is σ = 1783626240. Its totient is φ = 668463552.

The previous prime is 1170157931. The next prime is 1170157973. The reversal of 1170157947 is 7497510711.

It is not a de Polignac number, because 1170157947 - 2⁴ = 1170157931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1170157899 and 1170157908.

It is not an unprimeable number, because it can be changed into a prime (1170157927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93418 + ... + 105200.

It is an arithmetic number, because the mean of its divisors is an integer number (111476640).

Almost surely, 2^1170157947 is an apocalyptic number.

1170157947 is a deficient number, since it is larger than the sum of its proper divisors (613468293).

1170157947 is a wasteful number, since it uses less digits than its factorization.

1170157947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16522.

The product of its (nonzero) digits is 61740, while the sum is 42.

The square root of 1170157947 is about 34207.5714864414. The cubic root of 1170157947 is about 1053.7756577664.

The spelling of 1170157947 in words is "one billion, one hundred seventy million, one hundred fifty-seven thousand, nine hundred forty-seven".