1948407793 has 2 divisors, whose sum is σ = 1948407794. Its totient is φ = 1948407792.

The previous prime is 1948407749. The next prime is 1948407803. The reversal of 1948407793 is 3977048491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1642437729 + 305970064 = 40527^2 + 17492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1948407793 - 2¹³ = 1948399601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1948407793.

It is not a weakly prime, because it can be changed into another prime (1948407733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974203896 + 974203897.

It is an arithmetic number, because the mean of its divisors is an integer number (974203897).

Almost surely, 2^1948407793 is an apocalyptic number.

It is an amenable number.

1948407793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948407793 is an equidigital number, since it uses as much as digits as its factorization.

1948407793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 1948407793 is about 44140.7724558599. The cubic root of 1948407793 is about 1248.9928512457.

The spelling of 1948407793 in words is "one billion, nine hundred forty-eight million, four hundred seven thousand, seven hundred ninety-three".