193970153 has 16 divisors (see below), whose sum is σ = 222017040. Its totient is φ = 168461568.

The previous prime is 193970149. The next prime is 193970167. The reversal of 193970153 is 351079391.

It can be written as a sum of positive squares in 8 ways, for example, as 426409 + 193543744 = 653^2 + 13912^2 .

It is not a de Polignac number, because 193970153 - 2² = 193970149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (193970173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62351 + ... + 65387.

It is an arithmetic number, because the mean of its divisors is an integer number (13876065).

Almost surely, 2^193970153 is an apocalyptic number.

193970153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

193970153 is a deficient number, since it is larger than the sum of its proper divisors (28046887).

193970153 is an equidigital number, since it uses as much as digits as its factorization.

193970153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 193970153 is about 13927.3167911123. The cubic root of 193970153 is about 578.8663478657.

The spelling of 193970153 in words is "one hundred ninety-three million, nine hundred seventy thousand, one hundred fifty-three".