253671649 has 8 divisors (see below), whose sum is σ = 316266048. Its totient is φ = 197666160.

The previous prime is 253671647. The next prime is 253671659. The reversal of 253671649 is 946176352.

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

It is a cyclic number.

It is not a de Polignac number, because 253671649 - 2¹ = 253671647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253671647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647142 + ... + 1647295.

It is an arithmetic number, because the mean of its divisors is an integer number (39533256).

Almost surely, 2^253671649 is an apocalyptic number.

It is an amenable number.

253671649 is a deficient number, since it is larger than the sum of its proper divisors (62594399).

253671649 is a wasteful number, since it uses less digits than its factorization.

253671649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294455.

The product of its digits is 272160, while the sum is 43.

The square root of 253671649 is about 15927.0728321308. The cubic root of 253671649 is about 633.0295410678.

The spelling of 253671649 in words is "two hundred fifty-three million, six hundred seventy-one thousand, six hundred forty-nine".