133953374 has 4 divisors (see below), whose sum is σ = 200930064. Its totient is φ = 66976686.

The previous prime is 133953361. The next prime is 133953409. The reversal of 133953374 is 473359331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 473359331 = 19 ⋅24913649.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33488342 + ... + 33488345.

It is an arithmetic number, because the mean of its divisors is an integer number (50232516).

Almost surely, 2^133953374 is an apocalyptic number.

133953374 is a deficient number, since it is larger than the sum of its proper divisors (66976690).

133953374 is an equidigital number, since it uses as much as digits as its factorization.

133953374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66976689.

The product of its digits is 102060, while the sum is 38.

The square root of 133953374 is about 11573.8227911093. The cubic root of 133953374 is about 511.6636355762.

The spelling of 133953374 in words is "one hundred thirty-three million, nine hundred fifty-three thousand, three hundred seventy-four".