197025502390 has 16 divisors (see below), whose sum is σ = 354891020832. Its totient is φ = 78755730624.

The previous prime is 197025502367. The next prime is 197025502391. The reversal of 197025502390 is 93205520791.

197025502390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197025502391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6793599 + ... + 6822538.

It is an arithmetic number, because the mean of its divisors is an integer number (22180688802).

Almost surely, 2^197025502390 is an apocalyptic number.

197025502390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197025502390 is a deficient number, since it is larger than the sum of its proper divisors (157865518442).

197025502390 is a wasteful number, since it uses less digits than its factorization.

197025502390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13617591.

The product of its (nonzero) digits is 170100, while the sum is 43.

The spelling of 197025502390 in words is "one hundred ninety-seven billion, twenty-five million, five hundred two thousand, three hundred ninety".