197536838402 has 4 divisors (see below), whose sum is σ = 296305257606. Its totient is φ = 98768419200.

The previous prime is 197536838399. The next prime is 197536838423. The reversal of 197536838402 is 204838635791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 102444164761 + 95092673641 = 320069^2 + 308371^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49384209599 + ... + 49384209602.

It is a 1-persistent number, because it is pandigital, but 2⋅197536838402 = 395073676804 is not.

Almost surely, 2^197536838402 is an apocalyptic number.

197536838402 is a deficient number, since it is larger than the sum of its proper divisors (98768419204).

197536838402 is an equidigital number, since it uses as much as digits as its factorization.

197536838402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98768419203.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 197536838402 in words is "one hundred ninety-seven billion, five hundred thirty-six million, eight hundred thirty-eight thousand, four hundred two".