155338986 has 16 divisors (see below), whose sum is σ = 338921568. Its totient is φ = 47072400.

The previous prime is 155338973. The next prime is 155338991. The reversal of 155338986 is 689833551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176745 + ... + 1176876.

It is an arithmetic number, because the mean of its divisors is an integer number (21182598).

Almost surely, 2^155338986 is an apocalyptic number.

155338986 is an abundant number, since it is smaller than the sum of its proper divisors (183582582).

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

155338986 is a wasteful number, since it uses less digits than its factorization.

155338986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353637.

The product of its digits is 777600, while the sum is 48.

The square root of 155338986 is about 12463.5061680091. The cubic root of 155338986 is about 537.5598473833.

The spelling of 155338986 in words is "one hundred fifty-five million, three hundred thirty-eight thousand, nine hundred eighty-six".