1953441399 has 24 divisors (see below), whose sum is σ = 3262894320. Its totient is φ = 1030385664.

The previous prime is 1953441397. The next prime is 1953441403. The reversal of 1953441399 is 9931443591.

It is a happy number.

It is not a de Polignac number, because 1953441399 - 2¹ = 1953441397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953441397) 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 23 ways as a sum of consecutive naturals, for example, 509194 + ... + 513015.

It is an arithmetic number, because the mean of its divisors is an integer number (135953930).

Almost surely, 2^1953441399 is an apocalyptic number.

1953441399 is a deficient number, since it is larger than the sum of its proper divisors (1309452921).

1953441399 is a wasteful number, since it uses less digits than its factorization.

1953441399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022239 (or 1022232 counting only the distinct ones).

The product of its digits is 524880, while the sum is 48.

The square root of 1953441399 is about 44197.7533252540. The cubic root of 1953441399 is about 1250.0674948088.

The spelling of 1953441399 in words is "one billion, nine hundred fifty-three million, four hundred forty-one thousand, three hundred ninety-nine".