158178012 has 12 divisors (see below), whose sum is σ = 369082056. Its totient is φ = 52726000.

The previous prime is 158178011. The next prime is 158178029. The reversal of 158178012 is 210871851.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158178011) 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, 6590739 + ... + 6590762.

It is an arithmetic number, because the mean of its divisors is an integer number (30756838).

Almost surely, 2^158178012 is an apocalyptic number.

158178012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158178012 is an abundant number, since it is smaller than the sum of its proper divisors (210904044).

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

158178012 is a wasteful number, since it uses less digits than its factorization.

158178012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13181508 (or 13181506 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 33.

The square root of 158178012 is about 12576.8840338138. The cubic root of 158178012 is about 540.8149697008.

The spelling of 158178012 in words is "one hundred fifty-eight million, one hundred seventy-eight thousand, twelve".