1949934197 has 4 divisors (see below), whose sum is σ = 1971843660. Its totient is φ = 1928024736.

The previous prime is 1949934157. The next prime is 1949934199. The reversal of 1949934197 is 7914399491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162843121 + 1787091076 = 12761^2 + 42274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1949934197 - 2⁸ = 1949933941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949934199) 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, 10954598 + ... + 10954775.

It is an arithmetic number, because the mean of its divisors is an integer number (492960915).

Almost surely, 2^1949934197 is an apocalyptic number.

It is an amenable number.

1949934197 is a deficient number, since it is larger than the sum of its proper divisors (21909463).

1949934197 is an equidigital number, since it uses as much as digits as its factorization.

1949934197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21909462.

The product of its digits is 2204496, while the sum is 56.

The square root of 1949934197 is about 44158.0592530967. The cubic root of 1949934197 is about 1249.3189243361.

The spelling of 1949934197 in words is "one billion, nine hundred forty-nine million, nine hundred thirty-four thousand, one hundred ninety-seven".