1621441214 has 16 divisors (see below), whose sum is σ = 2517073920. Its totient is φ = 782439840.

The previous prime is 1621441201. The next prime is 1621441223. The reversal of 1621441214 is 4121441261.

It is a super-2 number, since 2×1621441214² = 5258143220915587592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193859 + ... + 202049.

It is an arithmetic number, because the mean of its divisors is an integer number (157317120).

Almost surely, 2^1621441214 is an apocalyptic number.

1621441214 is a deficient number, since it is larger than the sum of its proper divisors (895632706).

1621441214 is a wasteful number, since it uses less digits than its factorization.

1621441214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11635.

The product of its digits is 1536, while the sum is 26.

The square root of 1621441214 is about 40267.1232396853. The cubic root of 1621441214 is about 1174.8084707283.

Adding to 1621441214 its reverse (4121441261), we get a palindrome (5742882475).

The spelling of 1621441214 in words is "one billion, six hundred twenty-one million, four hundred forty-one thousand, two hundred fourteen".