1948620911 has 2 divisors, whose sum is σ = 1948620912. Its totient is φ = 1948620910.

The previous prime is 1948620871. The next prime is 1948620923. The reversal of 1948620911 is 1190268491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1948620911 - 2³⁰ = 874879087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1948620941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974310455 + 974310456.

It is an arithmetic number, because the mean of its divisors is an integer number (974310456).

Almost surely, 2^1948620911 is an apocalyptic number.

1948620911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948620911 is an equidigital number, since it uses as much as digits as its factorization.

1948620911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1948620911 is about 44143.1864617859. The cubic root of 1948620911 is about 1249.0383881118.

The spelling of 1948620911 in words is "one billion, nine hundred forty-eight million, six hundred twenty thousand, nine hundred eleven".