197329019940 has 288 divisors, whose sum is σ = 679825560960. Its totient is φ = 47749118976.

The previous prime is 197329019939. The next prime is 197329019959. The reversal of 197329019940 is 49910923791.

It is a happy number.

197329019940 is a `hidden beast` number, since 1 + 97 + 329 + 0 + 199 + 40 = 666.

It is a super-2 number, since 2×197329019940² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3701152 + ... + 3754088.

It is an arithmetic number, because the mean of its divisors is an integer number (2360505420).

Almost surely, 2^197329019940 is an apocalyptic number.

197329019940 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 197329019940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339912780480).

197329019940 is an abundant number, since it is smaller than the sum of its proper divisors (482496541020).

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

197329019940 is a wasteful number, since it uses less digits than its factorization.

197329019940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53033 (or 53019 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The spelling of 197329019940 in words is "one hundred ninety-seven billion, three hundred twenty-nine million, nineteen thousand, nine hundred forty".