155938934 has 4 divisors (see below), whose sum is σ = 233908404. Its totient is φ = 77969466.

The previous prime is 155938931. The next prime is 155938961. The reversal of 155938934 is 439839551.

155938934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 439839551 = 199 ⋅2210249.

It is a super-2 number, since 2×155938934² = 48633902274112712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155938931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38984732 + ... + 38984735.

It is an arithmetic number, because the mean of its divisors is an integer number (58477101).

Almost surely, 2^155938934 is an apocalyptic number.

155938934 is a deficient number, since it is larger than the sum of its proper divisors (77969470).

155938934 is an equidigital number, since it uses as much as digits as its factorization.

155938934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77969469.

The product of its digits is 583200, while the sum is 47.

The square root of 155938934 is about 12487.5511610564. The cubic root of 155938934 is about 538.2510103189.

The spelling of 155938934 in words is "one hundred fifty-five million, nine hundred thirty-eight thousand, nine hundred thirty-four".