1156089642 has 16 divisors (see below), whose sum is σ = 2374671072. Its totient is φ = 374947920.

The previous prime is 1156089581. The next prime is 1156089677. The reversal of 1156089642 is 2469806511.

It is a junction number, because it is equal to n+sod(n) for n = 1156089594 and 1156089603.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2603584 + ... + 2604027.

It is an arithmetic number, because the mean of its divisors is an integer number (148416942).

Almost surely, 2^1156089642 is an apocalyptic number.

1156089642 is an abundant number, since it is smaller than the sum of its proper divisors (1218581430).

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

1156089642 is a wasteful number, since it uses less digits than its factorization.

1156089642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207653.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1156089642 is about 34001.3182391507. The cubic root of 1156089642 is about 1049.5355896350.

It can be divided in two parts, 115608 and 9642, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 1156089642 in words is "one billion, one hundred fifty-six million, eighty-nine thousand, six hundred forty-two".