155393946 has 24 divisors (see below), whose sum is σ = 336945024. Its totient is φ = 51758280.

The previous prime is 155393941. The next prime is 155393947. The reversal of 155393946 is 649393551.

155393946 is a `hidden beast` number, since 1 + 553 + 9 + 3 + 94 + 6 = 666.

155393946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (155393941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29751 + ... + 34581.

It is an arithmetic number, because the mean of its divisors is an integer number (14039376).

Almost surely, 2^155393946 is an apocalyptic number.

155393946 is an abundant number, since it is smaller than the sum of its proper divisors (181551078).

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

155393946 is a wasteful number, since it uses less digits than its factorization.

155393946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626 (or 6623 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 155393946 is about 12465.7108100581. The cubic root of 155393946 is about 537.6232373632.

The spelling of 155393946 in words is "one hundred fifty-five million, three hundred ninety-three thousand, nine hundred forty-six".