156996109 has 8 divisors (see below), whose sum is σ = 160830720. Its totient is φ = 153200736.

The previous prime is 156996101. The next prime is 156996113. The reversal of 156996109 is 901699651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156996109 - 2³ = 156996101 is a prime.

It is a super-2 number, since 2×156996109² = 49295556482279762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156996101) 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 7 ways as a sum of consecutive naturals, for example, 1629 + ... + 17794.

It is an arithmetic number, because the mean of its divisors is an integer number (20103840).

Almost surely, 2^156996109 is an apocalyptic number.

It is an amenable number.

156996109 is a deficient number, since it is larger than the sum of its proper divisors (3834611).

156996109 is a wasteful number, since it uses less digits than its factorization.

156996109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19619.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 156996109 is about 12529.8088173763. The cubic root of 156996109 is about 539.4646145411.

The spelling of 156996109 in words is "one hundred fifty-six million, nine hundred ninety-six thousand, one hundred nine".