197749013 has 8 divisors (see below), whose sum is σ = 246544320. Its totient is φ = 154090080.

The previous prime is 197748977. The next prime is 197749021. The reversal of 197749013 is 310947791.

197749013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197749013 - 2¹⁴ = 197732629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197749063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1284008 + ... + 1284161.

It is an arithmetic number, because the mean of its divisors is an integer number (30818040).

Almost surely, 2^197749013 is an apocalyptic number.

It is an amenable number.

197749013 is a deficient number, since it is larger than the sum of its proper divisors (48795307).

197749013 is a wasteful number, since it uses less digits than its factorization.

197749013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568187.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 197749013 is about 14062.3260167015. The cubic root of 197749013 is about 582.6012894648.

The spelling of 197749013 in words is "one hundred ninety-seven million, seven hundred forty-nine thousand, thirteen".