197238681970 has 32 divisors (see below), whose sum is σ = 410087702016. Its totient is φ = 67504147200.

The previous prime is 197238681967. The next prime is 197238681971. The reversal of 197238681970 is 79186832791.

It is a junction number, because it is equal to n+sod(n) for n = 197238681899 and 197238681908.

It is not an unprimeable number, because it can be changed into a prime (197238681971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52735746 + ... + 52739485.

It is an arithmetic number, because the mean of its divisors is an integer number (12815240688).

Almost surely, 2^197238681970 is an apocalyptic number.

197238681970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197238681970 is an abundant number, since it is smaller than the sum of its proper divisors (212849020046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197238681970 is a wasteful number, since it uses less digits than its factorization.

197238681970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105475266.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 197238681970 in words is "one hundred ninety-seven billion, two hundred thirty-eight million, six hundred eighty-one thousand, nine hundred seventy".