1012190158 has 24 divisors (see below), whose sum is σ = 1807249752. Its totient is φ = 423705744.

The previous prime is 1012190143. The next prime is 1012190159. The reversal of 1012190158 is 8510912101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012190159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115885 + ... + 124312.

It is an arithmetic number, because the mean of its divisors is an integer number (75302073).

Almost surely, 2^1012190158 is an apocalyptic number.

1012190158 is a deficient number, since it is larger than the sum of its proper divisors (795059594).

1012190158 is a wasteful number, since it uses less digits than its factorization.

1012190158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240256 (or 240249 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 1012190158 is about 31814.9360835442. The cubic root of 1012190158 is about 1004.0469858119.

The spelling of 1012190158 in words is "one billion, twelve million, one hundred ninety thousand, one hundred fifty-eight".