133813390 has 16 divisors (see below), whose sum is σ = 253541520. Its totient is φ = 50708160.

The previous prime is 133813387. The next prime is 133813399. The reversal of 133813390 is 93318331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133813399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351951 + ... + 352330.

It is an arithmetic number, because the mean of its divisors is an integer number (15846345).

Almost surely, 2^133813390 is an apocalyptic number.

133813390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133813390 is a deficient number, since it is larger than the sum of its proper divisors (119728130).

133813390 is a wasteful number, since it uses less digits than its factorization.

133813390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704307.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 133813390 is about 11567.7737702637. The cubic root of 133813390 is about 511.4853404862.

The spelling of 133813390 in words is "one hundred thirty-three million, eight hundred thirteen thousand, three hundred ninety".