49019813 has 4 divisors (see below), whose sum is σ = 49751520. Its totient is φ = 48288108.

The previous prime is 49019801. The next prime is 49019821. The reversal of 49019813 is 31891094.

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 49019813 - 2⁴ = 49019797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49019213) 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, 365753 + ... + 365886.

It is an arithmetic number, because the mean of its divisors is an integer number (12437880).

Almost surely, 2^49019813 is an apocalyptic number.

It is an amenable number.

49019813 is a deficient number, since it is larger than the sum of its proper divisors (731707).

49019813 is an equidigital number, since it uses as much as digits as its factorization.

49019813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731706.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 49019813 is about 7001.4150712552. The cubic root of 49019813 is about 365.9798853249.

The spelling of 49019813 in words is "forty-nine million, nineteen thousand, eight hundred thirteen".