1621053214 has 12 divisors (see below), whose sum is σ = 2672728632. Its totient is φ = 736842260.

The previous prime is 1621053211. The next prime is 1621053299. The reversal of 1621053214 is 4123501261.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621053211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3349042 + ... + 3349525.

It is an arithmetic number, because the mean of its divisors is an integer number (222727386).

Almost surely, 2^1621053214 is an apocalyptic number.

1621053214 is a deficient number, since it is larger than the sum of its proper divisors (1051675418).

1621053214 is a wasteful number, since it uses less digits than its factorization.

1621053214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6698591 (or 6698580 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1621053214 is about 40262.3051252657. The cubic root of 1621053214 is about 1174.7147553254.

Adding to 1621053214 its reverse (4123501261), we get a palindrome (5744554475).

The spelling of 1621053214 in words is "one billion, six hundred twenty-one million, fifty-three thousand, two hundred fourteen".