1162854721 has 20 divisors (see below), whose sum is σ = 1370843012. Its totient is φ = 986259456.

The previous prime is 1162854697. The next prime is 1162854779. The reversal of 1162854721 is 1274582611.

It can be written as a sum of positive squares in 2 ways, for example, as 462723121 + 700131600 = 21511^2 + 26460^2 .

It is not a de Polignac number, because 1162854721 - 2¹⁷ = 1162723649 is a prime.

It is a super-2 number, since 2×1162854721² = 2704462204303975682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1162854221) 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 19 ways as a sum of consecutive naturals, for example, 230401 + ... + 235393.

Almost surely, 2^1162854721 is an apocalyptic number.

It is an amenable number.

1162854721 is a deficient number, since it is larger than the sum of its proper divisors (207988291).

1162854721 is an frugal number, since it uses more digits than its factorization.

1162854721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118 (or 5097 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 1162854721 is about 34100.6557268332. The cubic root of 1162854721 is about 1051.5787952810.

It can be divided in two parts, 1162854 and 721, that added together give a triangular number (1163575 = T₁₅₂₅).

The spelling of 1162854721 in words is "one billion, one hundred sixty-two million, eight hundred fifty-four thousand, seven hundred twenty-one".