194523970 has 16 divisors (see below), whose sum is σ = 352495800. Its totient is φ = 77286784.

The previous prime is 194523961. The next prime is 194523997. The reversal of 194523970 is 79325491.

It can be written as a sum of positive squares in 4 ways, for example, as 59243809 + 135280161 = 7697^2 + 11631^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63787 + ... + 66766.

Almost surely, 2^194523970 is an apocalyptic number.

194523970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194523970 is a deficient number, since it is larger than the sum of its proper divisors (157971830).

194523970 is a wasteful number, since it uses less digits than its factorization.

194523970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130709.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 194523970 is about 13947.1850206413. The cubic root of 194523970 is about 579.4167442256.

The spelling of 194523970 in words is "one hundred ninety-four million, five hundred twenty-three thousand, nine hundred seventy".