192538751021 has 2 divisors, whose sum is σ = 192538751022. Its totient is φ = 192538751020.

The previous prime is 192538750993. The next prime is 192538751029. The reversal of 192538751021 is 120157835291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192248048521 + 290702500 = 438461^2 + 17050^2 .

It is a cyclic number.

It is not a de Polignac number, because 192538751021 - 2³⁴ = 175358881837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192538751029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96269375510 + 96269375511.

It is an arithmetic number, because the mean of its divisors is an integer number (96269375511).

Almost surely, 2^192538751021 is an apocalyptic number.

It is an amenable number.

192538751021 is a deficient number, since it is larger than the sum of its proper divisors (1).

192538751021 is an equidigital number, since it uses as much as digits as its factorization.

192538751021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 192538751021 in words is "one hundred ninety-two billion, five hundred thirty-eight million, seven hundred fifty-one thousand, twenty-one".