194169915970 has 8 divisors (see below), whose sum is σ = 349505848764. Its totient is φ = 77667966384.

The previous prime is 194169915931. The next prime is 194169916019. The reversal of 194169915970 is 79519961491.

194169915970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 185389663761 + 8780252209 = 430569^2 + 93703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×194169915970² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194169915899 and 194169915908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9708495789 + ... + 9708495808.

Almost surely, 2^194169915970 is an apocalyptic number.

194169915970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194169915970 is a deficient number, since it is larger than the sum of its proper divisors (155335932794).

194169915970 is a wasteful number, since it uses less digits than its factorization.

194169915970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19416991604.

The product of its (nonzero) digits is 5511240, while the sum is 61.

The spelling of 194169915970 in words is "one hundred ninety-four billion, one hundred sixty-nine million, nine hundred fifteen thousand, nine hundred seventy".