1949355017 has 4 divisors (see below), whose sum is σ = 1978449936. Its totient is φ = 1920260100.

The previous prime is 1949355013. The next prime is 1949355049. The reversal of 1949355017 is 7105539491.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7105539491 = 71 ⋅100078021.

It is a cyclic number.

It is not a de Polignac number, because 1949355017 - 2² = 1949355013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949355011) 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, 14547359 + ... + 14547492.

It is an arithmetic number, because the mean of its divisors is an integer number (494612484).

Almost surely, 2^1949355017 is an apocalyptic number.

It is an amenable number.

1949355017 is a deficient number, since it is larger than the sum of its proper divisors (29094919).

1949355017 is an equidigital number, since it uses as much as digits as its factorization.

1949355017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29094918.

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

The square root of 1949355017 is about 44151.5007332707. The cubic root of 1949355017 is about 1249.1952189331.

The spelling of 1949355017 in words is "one billion, nine hundred forty-nine million, three hundred fifty-five thousand, seventeen".