616357149 has 4 divisors (see below), whose sum is σ = 821809536. Its totient is φ = 410904764.

The previous prime is 616357139. The next prime is 616357163. The reversal of 616357149 is 941753616.

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 616357149 - 2¹² = 616353053 is a prime.

It is a super-2 number, since 2×616357149² = 759792270246816402, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 616357149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616357139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102726189 + ... + 102726194.

It is an arithmetic number, because the mean of its divisors is an integer number (205452384).

Almost surely, 2^616357149 is an apocalyptic number.

It is an amenable number.

616357149 is a deficient number, since it is larger than the sum of its proper divisors (205452387).

616357149 is a wasteful number, since it uses less digits than its factorization.

616357149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205452386.

The product of its digits is 136080, while the sum is 42.

The square root of 616357149 is about 24826.5412210400. The cubic root of 616357149 is about 851.0285813443.

The spelling of 616357149 in words is "six hundred sixteen million, three hundred fifty-seven thousand, one hundred forty-nine".