1790164321 has 4 divisors (see below), whose sum is σ = 1952906544. Its totient is φ = 1627422100.

The previous prime is 1790164319. The next prime is 1790164331. The reversal of 1790164321 is 1234610971.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1790164321 - 2¹ = 1790164319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1790164331) 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, 81371095 + ... + 81371116.

It is an arithmetic number, because the mean of its divisors is an integer number (488226636).

Almost surely, 2^1790164321 is an apocalyptic number.

1790164321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1790164321 is a deficient number, since it is larger than the sum of its proper divisors (162742223).

1790164321 is a wasteful number, since it uses less digits than its factorization.

1790164321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162742222.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1790164321 is about 42310.3335014036. Note that the first 3 decimals coincide. The cubic root of 1790164321 is about 1214.2206998330.

The spelling of 1790164321 in words is "one billion, seven hundred ninety million, one hundred sixty-four thousand, three hundred twenty-one".