155989196 has 12 divisors (see below), whose sum is σ = 297797640. Its totient is φ = 70904160.

The previous prime is 155989187. The next prime is 155989219. The reversal of 155989196 is 691989551.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1772561 + ... + 1772648.

It is an arithmetic number, because the mean of its divisors is an integer number (24816470).

Almost surely, 2^155989196 is an apocalyptic number.

It is an amenable number.

155989196 is a deficient number, since it is larger than the sum of its proper divisors (141808444).

155989196 is a wasteful number, since it uses less digits than its factorization.

155989196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545224 (or 3545222 counting only the distinct ones).

The product of its digits is 874800, while the sum is 53.

The square root of 155989196 is about 12489.5634831647. The cubic root of 155989196 is about 538.3088335225.

The spelling of 155989196 in words is "one hundred fifty-five million, nine hundred eighty-nine thousand, one hundred ninety-six".