196181940 has 24 divisors (see below), whose sum is σ = 549309600. Its totient is φ = 52315168.

The previous prime is 196181939. The next prime is 196181941. The reversal of 196181940 is 49181691.

It is an interprime number because it is at equal distance from previous prime (196181939) and next prime (196181941).

It is a super-3 number, since 3×196181940³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196181941) 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, 1634790 + ... + 1634909.

It is an arithmetic number, because the mean of its divisors is an integer number (22887900).

Almost surely, 2^196181940 is an apocalyptic number.

196181940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196181940 is an abundant number, since it is smaller than the sum of its proper divisors (353127660).

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

196181940 is a wasteful number, since it uses less digits than its factorization.

196181940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269711 (or 3269709 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 196181940 is about 14006.4963499085. The cubic root of 196181940 is about 581.0582542462.

The spelling of 196181940 in words is "one hundred ninety-six million, one hundred eighty-one thousand, nine hundred forty".