1642820214 has 32 divisors (see below), whose sum is σ = 3761671680. Its totient is φ = 468545472.

The previous prime is 1642820213. The next prime is 1642820273. The reversal of 1642820214 is 4120282461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642820213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10474 + ... + 58269.

It is an arithmetic number, because the mean of its divisors is an integer number (117552240).

Almost surely, 2^1642820214 is an apocalyptic number.

1642820214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1642820214 is an abundant number, since it is smaller than the sum of its proper divisors (2118851466).

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

1642820214 is a wasteful number, since it uses less digits than its factorization.

1642820214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69324.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1642820214 is about 40531.7186164120. The cubic root of 1642820214 is about 1179.9492973522.

The spelling of 1642820214 in words is "one billion, six hundred forty-two million, eight hundred twenty thousand, two hundred fourteen".