134748381 has 4 divisors (see below), whose sum is σ = 179664512. Its totient is φ = 89832252.

The previous prime is 134748373. The next prime is 134748391. The reversal of 134748381 is 183847431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183847431 = 3 ⋅61282477.

It is not a de Polignac number, because 134748381 - 2³ = 134748373 is a prime.

It is a super-2 number, since 2×134748381² = 36314252364242322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134748391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22458061 + ... + 22458066.

It is an arithmetic number, because the mean of its divisors is an integer number (44916128).

Almost surely, 2^134748381 is an apocalyptic number.

It is an amenable number.

134748381 is a deficient number, since it is larger than the sum of its proper divisors (44916131).

134748381 is an equidigital number, since it uses as much as digits as its factorization.

134748381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44916130.

The product of its digits is 64512, while the sum is 39.

The square root of 134748381 is about 11608.1170307677. The cubic root of 134748381 is about 512.6738728705.

The spelling of 134748381 in words is "one hundred thirty-four million, seven hundred forty-eight thousand, three hundred eighty-one".