133815370 has 16 divisors (see below), whose sum is σ = 259396200. Its totient is φ = 49408704.

The previous prime is 133815359. The next prime is 133815371. The reversal of 133815370 is 73518331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 100741369 + 33074001 = 10037^2 + 5751^2 .

It is not an unprimeable number, because it can be changed into a prime (133815371) 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, 514545 + ... + 514804.

Almost surely, 2^133815370 is an apocalyptic number.

133815370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133815370 is a deficient number, since it is larger than the sum of its proper divisors (125580830).

133815370 is a wasteful number, since it uses less digits than its factorization.

133815370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029369.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 133815370 is about 11567.8593525336. The cubic root of 133815370 is about 511.4878632431.

The spelling of 133815370 in words is "one hundred thirty-three million, eight hundred fifteen thousand, three hundred seventy".