351238649 has 16 divisors (see below), whose sum is σ = 387910656. Its totient is φ = 316569600.

The previous prime is 351238637. The next prime is 351238651. The reversal of 351238649 is 946832153.

It is a cyclic number.

It is not a de Polignac number, because 351238649 - 2¹⁶ = 351173113 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 (351238609) 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, 47684 + ... + 54554.

It is an arithmetic number, because the mean of its divisors is an integer number (24244416).

Almost surely, 2^351238649 is an apocalyptic number.

It is an amenable number.

351238649 is a deficient number, since it is larger than the sum of its proper divisors (36672007).

351238649 is a wasteful number, since it uses less digits than its factorization.

351238649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016.

The product of its digits is 155520, while the sum is 41.

The square root of 351238649 is about 18741.3619835913. The cubic root of 351238649 is about 705.5602400894.

The spelling of 351238649 in words is "three hundred fifty-one million, two hundred thirty-eight thousand, six hundred forty-nine".