197129371000 has 64 divisors (see below), whose sum is σ = 461549088000. Its totient is φ = 78806217600.

The previous prime is 197129370979. The next prime is 197129371003. The reversal of 197129371000 is 173921791.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197129371003) 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, 1702966 + ... + 1815034.

It is an arithmetic number, because the mean of its divisors is an integer number (7211704500).

Almost surely, 2^197129371000 is an apocalyptic number.

197129371000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197129371000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230774544000).

197129371000 is an abundant number, since it is smaller than the sum of its proper divisors (264419717000).

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

197129371000 is a wasteful number, since it uses less digits than its factorization.

197129371000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113849 (or 113835 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 40.

The spelling of 197129371000 in words is "one hundred ninety-seven billion, one hundred twenty-nine million, three hundred seventy-one thousand".