153694138 has 8 divisors (see below), whose sum is σ = 248275188. Its totient is φ = 70935744.

The previous prime is 153694133. The next prime is 153694141. The reversal of 153694138 is 831496351.

It can be written as a sum of positive squares in 2 ways, for example, as 150479289 + 3214849 = 12267^2 + 1793^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 153694138.

It is not an unprimeable number, because it can be changed into a prime (153694133) 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, 2955631 + ... + 2955682.

Almost surely, 2^153694138 is an apocalyptic number.

153694138 is a deficient number, since it is larger than the sum of its proper divisors (94581050).

153694138 is a wasteful number, since it uses less digits than its factorization.

153694138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911328.

The product of its digits is 77760, while the sum is 40.

The square root of 153694138 is about 12397.3439897423. The cubic root of 153694138 is about 535.6557458454.

The spelling of 153694138 in words is "one hundred fifty-three million, six hundred ninety-four thousand, one hundred thirty-eight".