1645230830 has 8 divisors (see below), whose sum is σ = 2961415512. Its totient is φ = 658092328.

The previous prime is 1645230793. The next prime is 1645230833. The reversal of 1645230830 is 380325461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645230833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82261532 + ... + 82261551.

It is an arithmetic number, because the mean of its divisors is an integer number (370176939).

Almost surely, 2^1645230830 is an apocalyptic number.

1645230830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645230830 is a deficient number, since it is larger than the sum of its proper divisors (1316184682).

1645230830 is a wasteful number, since it uses less digits than its factorization.

1645230830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164523090.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1645230830 is about 40561.4451172539. The cubic root of 1645230830 is about 1180.5261538467.

The spelling of 1645230830 in words is "one billion, six hundred forty-five million, two hundred thirty thousand, eight hundred thirty".