1930804390945 has 8 divisors (see below), whose sum is σ = 2323604140200. Its totient is φ = 1540217598720.

The previous prime is 1930804390913. The next prime is 1930804390981. The reversal of 1930804390945 is 5490934080391.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 883391332321 + 1047413058624 = 939889^2 + 1023432^2 .

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

It is not a de Polignac number, because 1930804390945 - 2⁵ = 1930804390913 is a prime.

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, 553237336 + ... + 553240825.

It is an arithmetic number, because the mean of its divisors is an integer number (290450517525).

Almost surely, 2^{1930804390945} is an apocalyptic number.

It is an amenable number.

1930804390945 is a deficient number, since it is larger than the sum of its proper divisors (392799749255).

1930804390945 is a wasteful number, since it uses less digits than its factorization.

1930804390945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106478515.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 1930804390945 in words is "one trillion, nine hundred thirty billion, eight hundred four million, three hundred ninety thousand, nine hundred forty-five".