193970161940 has 12 divisors (see below), whose sum is σ = 407337340116. Its totient is φ = 77588064768.

The previous prime is 193970161873. The next prime is 193970161943. The reversal of 193970161940 is 49161079391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 150547104016 + 43423057924 = 388004^2 + 208382^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193970161943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4849254029 + ... + 4849254068.

It is an arithmetic number, because the mean of its divisors is an integer number (33944778343).

Almost surely, 2^193970161940 is an apocalyptic number.

193970161940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193970161940 is an abundant number, since it is smaller than the sum of its proper divisors (213367178176).

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

193970161940 is a wasteful number, since it uses less digits than its factorization.

193970161940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9698508106 (or 9698508104 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 50.

The spelling of 193970161940 in words is "one hundred ninety-three billion, nine hundred seventy million, one hundred sixty-one thousand, nine hundred forty".