1621434846 has 16 divisors (see below), whose sum is σ = 3243312000. Its totient is φ = 540404568.

The previous prime is 1621434833. The next prime is 1621434889. The reversal of 1621434846 is 6484341261.

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, 47215 + ... + 73973.

It is an arithmetic number, because the mean of its divisors is an integer number (202707000).

Almost surely, 2^1621434846 is an apocalyptic number.

1621434846 is an abundant number, since it is smaller than the sum of its proper divisors (1621877154).

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

1621434846 is a wasteful number, since it uses less digits than its factorization.

1621434846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36863.

The product of its digits is 110592, while the sum is 39.

The square root of 1621434846 is about 40267.0441676565. The cubic root of 1621434846 is about 1174.8069327570.

The spelling of 1621434846 in words is "one billion, six hundred twenty-one million, four hundred thirty-four thousand, eight hundred forty-six".