133774649 has 16 divisors (see below), whose sum is σ = 150583680. Its totient is φ = 118091520.

The previous prime is 133774637. The next prime is 133774673. The reversal of 133774649 is 946477331.

It is a de Polignac number, because none of the positive numbers 2^k-133774649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133794649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31259 + ... + 35279.

It is an arithmetic number, because the mean of its divisors is an integer number (9411480).

Almost surely, 2^133774649 is an apocalyptic number.

133774649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

133774649 is a deficient number, since it is larger than the sum of its proper divisors (16809031).

133774649 is a wasteful number, since it uses less digits than its factorization.

133774649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160.

The product of its digits is 381024, while the sum is 44.

The square root of 133774649 is about 11566.0991263260. The cubic root of 133774649 is about 511.4359748082.

The spelling of 133774649 in words is "one hundred thirty-three million, seven hundred seventy-four thousand, six hundred forty-nine".