133849023 has 16 divisors (see below), whose sum is σ = 222502656. Its totient is φ = 69531840.

The previous prime is 133849021. The next prime is 133849031. The reversal of 133849023 is 320948331.

It is a happy number.

It is not a de Polignac number, because 133849023 - 2¹ = 133849021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133849021) 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, 289486 + ... + 289947.

It is an arithmetic number, because the mean of its divisors is an integer number (13906416).

Almost surely, 2^133849023 is an apocalyptic number.

133849023 is a deficient number, since it is larger than the sum of its proper divisors (88653633).

133849023 is a wasteful number, since it uses less digits than its factorization.

133849023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579454.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 133849023 is about 11569.3138517373. The cubic root of 133849023 is about 511.5307373870.

The spelling of 133849023 in words is "one hundred thirty-three million, eight hundred forty-nine thousand, twenty-three".