155946378 has 32 divisors (see below), whose sum is σ = 362298240. Its totient is φ = 43824960.

The previous prime is 155946359. The next prime is 155946397. The reversal of 155946378 is 873649551.

It is an interprime number because it is at equal distance from previous prime (155946359) and next prime (155946397).

It is a super-2 number, since 2×155946378² = 48638545622637768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27873 + ... + 32996.

It is an arithmetic number, because the mean of its divisors is an integer number (11321820).

Almost surely, 2^155946378 is an apocalyptic number.

155946378 is an abundant number, since it is smaller than the sum of its proper divisors (206351862).

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

155946378 is a wasteful number, since it uses less digits than its factorization.

155946378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60942.

The product of its digits is 907200, while the sum is 48.

The square root of 155946378 is about 12487.8492143363. The cubic root of 155946378 is about 538.2595749466.

The spelling of 155946378 in words is "one hundred fifty-five million, nine hundred forty-six thousand, three hundred seventy-eight".