153136993 has 4 divisors (see below), whose sum is σ = 158076928. Its totient is φ = 148197060.

The previous prime is 153136987. The next prime is 153137011. The reversal of 153136993 is 399631351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 153136993 - 2⁵ = 153136961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153136933) 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, 2469921 + ... + 2469982.

It is an arithmetic number, because the mean of its divisors is an integer number (39519232).

Almost surely, 2^153136993 is an apocalyptic number.

It is an amenable number.

153136993 is a deficient number, since it is larger than the sum of its proper divisors (4939935).

153136993 is an equidigital number, since it uses as much as digits as its factorization.

153136993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939934.

The product of its digits is 65610, while the sum is 40.

The square root of 153136993 is about 12374.8532516551. The cubic root of 153136993 is about 535.0077071123.

The spelling of 153136993 in words is "one hundred fifty-three million, one hundred thirty-six thousand, nine hundred ninety-three".