1953328349 has 4 divisors (see below), whose sum is σ = 2232375264. Its totient is φ = 1674281436.

The previous prime is 1953328241. The next prime is 1953328367. The reversal of 1953328349 is 9438233591.

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: 9438233591 = 109 ⋅86589299.

It is a cyclic number.

It is not a de Polignac number, because 1953328349 - 2¹⁶ = 1953262813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953324349) 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 3 ways as a sum of consecutive naturals, for example, 139523447 + ... + 139523460.

It is an arithmetic number, because the mean of its divisors is an integer number (558093816).

Almost surely, 2^1953328349 is an apocalyptic number.

It is an amenable number.

1953328349 is a deficient number, since it is larger than the sum of its proper divisors (279046915).

1953328349 is an equidigital number, since it uses as much as digits as its factorization.

1953328349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279046914.

The product of its digits is 699840, while the sum is 47.

The square root of 1953328349 is about 44196.4743955895. The cubic root of 1953328349 is about 1250.0433796145.

The spelling of 1953328349 in words is "one billion, nine hundred fifty-three million, three hundred twenty-eight thousand, three hundred forty-nine".