253670381 has 8 divisors (see below), whose sum is σ = 267675840. Its totient is φ = 239912992.

The previous prime is 253670371. The next prime is 253670467. The reversal of 253670381 is 183076352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253670381 is a prime.

It is a super-2 number, since 2×253670381² = 128697324393370322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253670371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59915 + ... + 64008.

It is an arithmetic number, because the mean of its divisors is an integer number (33459480).

Almost surely, 2^253670381 is an apocalyptic number.

It is an amenable number.

253670381 is a deficient number, since it is larger than the sum of its proper divisors (14005459).

253670381 is a wasteful number, since it uses less digits than its factorization.

253670381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124035.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 253670381 is about 15927.0330256454. The cubic root of 253670381 is about 633.0284863148.

The spelling of 253670381 in words is "two hundred fifty-three million, six hundred seventy thousand, three hundred eighty-one".