153988813 has 8 divisors (see below), whose sum is σ = 168499296. Its totient is φ = 139563600.

The previous prime is 153988789. The next prime is 153988823. The reversal of 153988813 is 318889351.

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

It is a de Polignac number, because none of the positive numbers 2^k-153988813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153988823) 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, 17506 + ... + 24787.

It is an arithmetic number, because the mean of its divisors is an integer number (21062412).

Almost surely, 2^153988813 is an apocalyptic number.

It is an amenable number.

153988813 is a deficient number, since it is larger than the sum of its proper divisors (14510483).

153988813 is a wasteful number, since it uses less digits than its factorization.

153988813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42635.

The product of its digits is 207360, while the sum is 46.

The square root of 153988813 is about 12409.2229007299. Note that the first 3 decimals coincide. The cubic root of 153988813 is about 535.9978616626.

The spelling of 153988813 in words is "one hundred fifty-three million, nine hundred eighty-eight thousand, eight hundred thirteen".