1948492142869 has 2 divisors, whose sum is σ = 1948492142870. Its totient is φ = 1948492142868.

The previous prime is 1948492142819. The next prime is 1948492142881. The reversal of 1948492142869 is 9682412948491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929771062244 + 18721080625 = 1389162^2 + 136825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1948492142869 - 2¹⁹ = 1948491618581 is a prime.

It is a super-2 number, since 2×1948492142869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1948492142819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974246071434 + 974246071435.

It is an arithmetic number, because the mean of its divisors is an integer number (974246071435).

Almost surely, 2^{1948492142869} is an apocalyptic number.

It is an amenable number.

1948492142869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948492142869 is an equidigital number, since it uses as much as digits as its factorization.

1948492142869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71663616, while the sum is 67.

The spelling of 1948492142869 in words is "one trillion, nine hundred forty-eight billion, four hundred ninety-two million, one hundred forty-two thousand, eight hundred sixty-nine".