1949022913 has 2 divisors, whose sum is σ = 1949022914. Its totient is φ = 1949022912.

The previous prime is 1949022883. The next prime is 1949022941. The reversal of 1949022913 is 3192209491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1440430209 + 508592704 = 37953^2 + 22552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1949022913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1949022973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974511456 + 974511457.

It is an arithmetic number, because the mean of its divisors is an integer number (974511457).

Almost surely, 2^1949022913 is an apocalyptic number.

It is an amenable number.

1949022913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949022913 is an equidigital number, since it uses as much as digits as its factorization.

1949022913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1949022913 is about 44147.7396137107. The cubic root of 1949022913 is about 1249.1242747341.

The spelling of 1949022913 in words is "one billion, nine hundred forty-nine million, twenty-two thousand, nine hundred thirteen".