202192139493 has 10 divisors (see below), whose sum is σ = 302040109734. Its totient is φ = 134794759608.

The previous prime is 202192139447. The next prime is 202192139533. The reversal of 202192139493 is 394931291202.

It is a happy number.

202192139493 is a `hidden beast` number, since 2 + 0 + 21 + 9 + 2 + 139 + 493 = 666.

It can be written as a sum of positive squares in only one way, i.e., 194346077409 + 7846062084 = 440847^2 + 88578^2 .

It is not a de Polignac number, because 202192139493 - 2²⁰ = 202191090917 is a prime.

It is a super-2 number, since 2×202192139493² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202192139423) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1248099546 + ... + 1248099707.

Almost surely, 2^202192139493 is an apocalyptic number.

It is an amenable number.

202192139493 is a deficient number, since it is larger than the sum of its proper divisors (99847970241).

202192139493 is an equidigital number, since it uses as much as digits as its factorization.

202192139493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496199265 (or 2496199256 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 202192139493 in words is "two hundred two billion, one hundred ninety-two million, one hundred thirty-nine thousand, four hundred ninety-three".