1621414080 has 672 divisors, whose sum is σ = 6816595968. Its totient is φ = 348364800.

The previous prime is 1621414063. The next prime is 1621414087. The reversal of 1621414080 is 804141261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1621414087) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12766977 + ... + 12767103.

It is an arithmetic number, because the mean of its divisors is an integer number (10143744).

Almost surely, 2^1621414080 is an apocalyptic number.

1621414080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1621414080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3408297984).

1621414080 is an abundant number, since it is smaller than the sum of its proper divisors (5195181888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1621414080 is a wasteful number, since it uses less digits than its factorization.

1621414080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1621414080 is about 40266.7863132880. The cubic root of 1621414080 is about 1174.8019174162.

The spelling of 1621414080 in words is "one billion, six hundred twenty-one million, four hundred fourteen thousand, eighty".