155794913 has 4 divisors (see below), whose sum is σ = 155934768. Its totient is φ = 155655060.

The previous prime is 155794909. The next prime is 155794963. The reversal of 155794913 is 319497551.

155794913 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155794913 - 2² = 155794909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155794963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68243 + ... + 70488.

It is an arithmetic number, because the mean of its divisors is an integer number (38983692).

Almost surely, 2^155794913 is an apocalyptic number.

It is an amenable number.

155794913 is a deficient number, since it is larger than the sum of its proper divisors (139855).

155794913 is a wasteful number, since it uses less digits than its factorization.

155794913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139854.

The product of its digits is 170100, while the sum is 44.

The square root of 155794913 is about 12481.7832459949. The cubic root of 155794913 is about 538.0852545665.

The spelling of 155794913 in words is "one hundred fifty-five million, seven hundred ninety-four thousand, nine hundred thirteen".