133919790 has 32 divisors (see below), whose sum is σ = 338325120. Its totient is φ = 33832224.

The previous prime is 133919789. The next prime is 133919831. The reversal of 133919790 is 97919331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116904 + ... + 118043.

It is an arithmetic number, because the mean of its divisors is an integer number (10572660).

Almost surely, 2^133919790 is an apocalyptic number.

133919790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133919790 is an abundant number, since it is smaller than the sum of its proper divisors (204405330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133919790 is a wasteful number, since it uses less digits than its factorization.

133919790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234976.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 133919790 is about 11572.3718398607. The cubic root of 133919790 is about 511.6208715723.

The spelling of 133919790 in words is "one hundred thirty-three million, nine hundred nineteen thousand, seven hundred ninety".