153638493 has 8 divisors (see below), whose sum is σ = 205167648. Its totient is φ = 102267504.

The previous prime is 153638483. The next prime is 153638531. The reversal of 153638493 is 394836351.

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

It is not a de Polignac number, because 153638493 - 2⁵ = 153638461 is a prime.

It is a super-2 number, since 2×153638493² = 47209573062622098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153638453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37255 + ... + 41172.

It is an arithmetic number, because the mean of its divisors is an integer number (25645956).

Almost surely, 2^153638493 is an apocalyptic number.

It is an amenable number.

153638493 is a deficient number, since it is larger than the sum of its proper divisors (51529155).

153638493 is an equidigital number, since it uses as much as digits as its factorization.

153638493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79083.

The product of its digits is 233280, while the sum is 42.

The square root of 153638493 is about 12395.0995558729. The cubic root of 153638493 is about 535.5910932780.

The spelling of 153638493 in words is "one hundred fifty-three million, six hundred thirty-eight thousand, four hundred ninety-three".